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Finding the Fourth Proportional to 131,672.59, 181,706.88 and 71,241.91

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Solution

The fourth proportional to 131,672.59, 181,706.88 and 71,241.91 is: 98,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,672.59 : 181,706.88 = 71,241.91 : x
  2. Step 2: Convert to fraction form
    131,672.59/181,706.88 = 71,241.91/x
  3. Step 3: Cross multiply
    131,672.59x = 181,706.88 × 71,241.91
  4. Step 4: Simplify right side
    131,672.59x = 12,945,143,926.60
  5. Step 5: Solve for x
    x = 12,945,143,926.60/131,672.59
  6. Step 6: Final answer
    x = 98,313.13

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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.