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Finding the Fourth Proportional to 131,960.32, 181,861.02 and 93,721.54

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Solution

The fourth proportional to 131,960.32, 181,861.02 and 93,721.54 is: 129,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,960.32 : 181,861.02 = 93,721.54 : x
  2. Step 2: Convert to fraction form
    131,960.32/181,861.02 = 93,721.54/x
  3. Step 3: Cross multiply
    131,960.32x = 181,861.02 × 93,721.54
  4. Step 4: Simplify right side
    131,960.32x = 17,044,293,951.07
  5. Step 5: Solve for x
    x = 17,044,293,951.07/131,960.32
  6. Step 6: Final answer
    x = 129,162.27

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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.