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Finding the Fourth Proportional to 172,478.43, 258,409.85 and 93,542.31

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Solution

The fourth proportional to 172,478.43, 258,409.85 and 93,542.31 is: 140,146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,478.43 : 258,409.85 = 93,542.31 : x
  2. Step 2: Convert to fraction form
    172,478.43/258,409.85 = 93,542.31/x
  3. Step 3: Cross multiply
    172,478.43x = 258,409.85 × 93,542.31
  4. Step 4: Simplify right side
    172,478.43x = 24,172,253,828.04
  5. Step 5: Solve for x
    x = 24,172,253,828.04/172,478.43
  6. Step 6: Final answer
    x = 140,146.53

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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.