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Finding the Fourth Proportional to 171,781.68, 257,700.10 and 53,480.36

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Solution

The fourth proportional to 171,781.68, 257,700.10 and 53,480.36 is: 80,229.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,781.68 : 257,700.10 = 53,480.36 : x
  2. Step 2: Convert to fraction form
    171,781.68/257,700.10 = 53,480.36/x
  3. Step 3: Cross multiply
    171,781.68x = 257,700.10 × 53,480.36
  4. Step 4: Simplify right side
    171,781.68x = 13,781,894,120.04
  5. Step 5: Solve for x
    x = 13,781,894,120.04/171,781.68
  6. Step 6: Final answer
    x = 80,229.13

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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.