Home / 156,389.20-234,402.32-71,972.15

Finding the Fourth Proportional to 156,389.20, 234,402.32 and 71,972.15

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Solution

The fourth proportional to 156,389.20, 234,402.32 and 71,972.15 is: 107,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,389.20 : 234,402.32 = 71,972.15 : x
  2. Step 2: Convert to fraction form
    156,389.20/234,402.32 = 71,972.15/x
  3. Step 3: Cross multiply
    156,389.20x = 234,402.32 × 71,972.15
  4. Step 4: Simplify right side
    156,389.20x = 16,870,437,943.31
  5. Step 5: Solve for x
    x = 16,870,437,943.31/156,389.20
  6. Step 6: Final answer
    x = 107,874.70

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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.