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Finding the Fourth Proportional to 131,489.83, 181,455.49 and 71,060.49

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Solution

The fourth proportional to 131,489.83, 181,455.49 and 71,060.49 is: 98,063.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,489.83 : 181,455.49 = 71,060.49 : x
  2. Step 2: Convert to fraction form
    131,489.83/181,455.49 = 71,060.49/x
  3. Step 3: Cross multiply
    131,489.83x = 181,455.49 × 71,060.49
  4. Step 4: Simplify right side
    131,489.83x = 12,894,316,121.42
  5. Step 5: Solve for x
    x = 12,894,316,121.42/131,489.83
  6. Step 6: Final answer
    x = 98,063.22

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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.