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Finding the Fourth Proportional to 177,731.43, 266,360.61 and 87,636.61

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Solution

The fourth proportional to 177,731.43, 266,360.61 and 87,636.61 is: 131,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,731.43 : 266,360.61 = 87,636.61 : x
  2. Step 2: Convert to fraction form
    177,731.43/266,360.61 = 87,636.61/x
  3. Step 3: Cross multiply
    177,731.43x = 266,360.61 × 87,636.61
  4. Step 4: Simplify right side
    177,731.43x = 23,342,940,897.93
  5. Step 5: Solve for x
    x = 23,342,940,897.93/177,731.43
  6. Step 6: Final answer
    x = 131,338.28

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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.