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Finding the Fourth Proportional to 78,343.16, 117,499.70 and 22,169.70

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Solution

The fourth proportional to 78,343.16, 117,499.70 and 22,169.70 is: 33,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,343.16 : 117,499.70 = 22,169.70 : x
  2. Step 2: Convert to fraction form
    78,343.16/117,499.70 = 22,169.70/x
  3. Step 3: Cross multiply
    78,343.16x = 117,499.70 × 22,169.70
  4. Step 4: Simplify right side
    78,343.16x = 2,604,933,154.51
  5. Step 5: Solve for x
    x = 2,604,933,154.51/78,343.16
  6. Step 6: Final answer
    x = 33,250.30

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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.