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Finding the Fourth Proportional to 131,960.57, 181,861.36 and 93,721.79

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Solution

The fourth proportional to 131,960.57, 181,861.36 and 93,721.79 is: 129,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,960.57 : 181,861.36 = 93,721.79 : x
  2. Step 2: Convert to fraction form
    131,960.57/181,861.36 = 93,721.79/x
  3. Step 3: Cross multiply
    131,960.57x = 181,861.36 × 93,721.79
  4. Step 4: Simplify right side
    131,960.57x = 17,044,372,411.38
  5. Step 5: Solve for x
    x = 17,044,372,411.38/131,960.57
  6. Step 6: Final answer
    x = 129,162.62

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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.