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Finding the Fourth Proportional to 157,937.76, 217,813.02 and 131,037.66

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Solution

The fourth proportional to 157,937.76, 217,813.02 and 131,037.66 is: 180,714.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,937.76 : 217,813.02 = 131,037.66 : x
  2. Step 2: Convert to fraction form
    157,937.76/217,813.02 = 131,037.66/x
  3. Step 3: Cross multiply
    157,937.76x = 217,813.02 × 131,037.66
  4. Step 4: Simplify right side
    157,937.76x = 28,541,708,458.33
  5. Step 5: Solve for x
    x = 28,541,708,458.33/157,937.76
  6. Step 6: Final answer
    x = 180,714.91

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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.