Home / 100,102,291.40-150,153,437.10-78,603,206.60

Finding the Fourth Proportional to 100,102,291.40, 150,153,437.10 and 78,603,206.60

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Solution

The fourth proportional to 100,102,291.40, 150,153,437.10 and 78,603,206.60 is: 117,904,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,102,291.40 : 150,153,437.10 = 78,603,206.60 : x
  2. Step 2: Convert to fraction form
    100,102,291.40/150,153,437.10 = 78,603,206.60/x
  3. Step 3: Cross multiply
    100,102,291.40x = 150,153,437.10 × 78,603,206.60
  4. Step 4: Simplify right side
    100,102,291.40x = 11,802,541,638,071,404
  5. Step 5: Solve for x
    x = 11,802,541,638,071,404/100,102,291.40
  6. Step 6: Final answer
    x = 117,904,809.90

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Double scale
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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.