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Finding the Fourth Proportional to 88,000.70, 132,001.05 and 78,323.90

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Solution

The fourth proportional to 88,000.70, 132,001.05 and 78,323.90 is: 117,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,000.70 : 132,001.05 = 78,323.90 : x
  2. Step 2: Convert to fraction form
    88,000.70/132,001.05 = 78,323.90/x
  3. Step 3: Cross multiply
    88,000.70x = 132,001.05 × 78,323.90
  4. Step 4: Simplify right side
    88,000.70x = 10,338,837,040.10
  5. Step 5: Solve for x
    x = 10,338,837,040.10/88,000.70
  6. Step 6: Final answer
    x = 117,485.85

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Similar ratio
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1.5x scale

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.