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Finding the Fourth Proportional to 83,127.66, 124,691.76 and 20,798.16

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Solution

The fourth proportional to 83,127.66, 124,691.76 and 20,798.16 is: 31,197.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,127.66 : 124,691.76 = 20,798.16 : x
  2. Step 2: Convert to fraction form
    83,127.66/124,691.76 = 20,798.16/x
  3. Step 3: Cross multiply
    83,127.66x = 124,691.76 × 20,798.16
  4. Step 4: Simplify right side
    83,127.66x = 2,593,359,175.16
  5. Step 5: Solve for x
    x = 2,593,359,175.16/83,127.66
  6. Step 6: Final answer
    x = 31,197.31

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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.