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Finding the Fourth Proportional to 172,177.92, 258,344.73 and 87,894.59

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Solution

The fourth proportional to 172,177.92, 258,344.73 and 87,894.59 is: 131,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,177.92 : 258,344.73 = 87,894.59 : x
  2. Step 2: Convert to fraction form
    172,177.92/258,344.73 = 87,894.59/x
  3. Step 3: Cross multiply
    172,177.92x = 258,344.73 × 87,894.59
  4. Step 4: Simplify right side
    172,177.92x = 22,707,102,830.29
  5. Step 5: Solve for x
    x = 22,707,102,830.29/172,177.92
  6. Step 6: Final answer
    x = 131,881.62

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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.