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Finding the Fourth Proportional to 108,188.65, 149,292.52 and 59,790

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Solution

The fourth proportional to 108,188.65, 149,292.52 and 59,790 is: 82,505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,188.65 : 149,292.52 = 59,790 : x
  2. Step 2: Convert to fraction form
    108,188.65/149,292.52 = 59,790/x
  3. Step 3: Cross multiply
    108,188.65x = 149,292.52 × 59,790
  4. Step 4: Simplify right side
    108,188.65x = 8,926,199,770.80
  5. Step 5: Solve for x
    x = 8,926,199,770.80/108,188.65
  6. Step 6: Final answer
    x = 82,505.88

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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.