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Finding the Fourth Proportional to 88,630.40, 132,945.60 and 71,134.40

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Solution

The fourth proportional to 88,630.40, 132,945.60 and 71,134.40 is: 106,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,630.40 : 132,945.60 = 71,134.40 : x
  2. Step 2: Convert to fraction form
    88,630.40/132,945.60 = 71,134.40/x
  3. Step 3: Cross multiply
    88,630.40x = 132,945.60 × 71,134.40
  4. Step 4: Simplify right side
    88,630.40x = 9,457,005,488.64
  5. Step 5: Solve for x
    x = 9,457,005,488.64/88,630.40
  6. Step 6: Final answer
    x = 106,701.60

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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.