Home / 100,102,279.90-150,153,419.85-78,603,195.10

Finding the Fourth Proportional to 100,102,279.90, 150,153,419.85 and 78,603,195.10

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Solution

The fourth proportional to 100,102,279.90, 150,153,419.85 and 78,603,195.10 is: 117,904,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,102,279.90 : 150,153,419.85 = 78,603,195.10 : x
  2. Step 2: Convert to fraction form
    100,102,279.90/150,153,419.85 = 78,603,195.10/x
  3. Step 3: Cross multiply
    100,102,279.90x = 150,153,419.85 × 78,603,195.10
  4. Step 4: Simplify right side
    100,102,279.90x = 11,802,538,555,401,762
  5. Step 5: Solve for x
    x = 11,802,538,555,401,762/100,102,279.90
  6. Step 6: Final answer
    x = 117,904,792.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.