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Finding the Fourth Proportional to 157,049.43, 216,727.15 and 89,079.63

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Solution

The fourth proportional to 157,049.43, 216,727.15 and 89,079.63 is: 122,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,049.43 : 216,727.15 = 89,079.63 : x
  2. Step 2: Convert to fraction form
    157,049.43/216,727.15 = 89,079.63/x
  3. Step 3: Cross multiply
    157,049.43x = 216,727.15 × 89,079.63
  4. Step 4: Simplify right side
    157,049.43x = 19,305,974,332.95
  5. Step 5: Solve for x
    x = 19,305,974,332.95/157,049.43
  6. Step 6: Final answer
    x = 122,929.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.