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Finding the Fourth Proportional to 88,187.40, 132,062.40 and 70,691.40

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Solution

The fourth proportional to 88,187.40, 132,062.40 and 70,691.40 is: 105,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,187.40 : 132,062.40 = 70,691.40 : x
  2. Step 2: Convert to fraction form
    88,187.40/132,062.40 = 70,691.40/x
  3. Step 3: Cross multiply
    88,187.40x = 132,062.40 × 70,691.40
  4. Step 4: Simplify right side
    88,187.40x = 9,335,675,943.36
  5. Step 5: Solve for x
    x = 9,335,675,943.36/88,187.40
  6. Step 6: Final answer
    x = 105,861.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.