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Finding the Fourth Proportional to 88,343.70, 132,515.55 and 78,666.90

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Solution

The fourth proportional to 88,343.70, 132,515.55 and 78,666.90 is: 118,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,343.70 : 132,515.55 = 78,666.90 : x
  2. Step 2: Convert to fraction form
    88,343.70/132,515.55 = 78,666.90/x
  3. Step 3: Cross multiply
    88,343.70x = 132,515.55 × 78,666.90
  4. Step 4: Simplify right side
    88,343.70x = 10,424,587,520.30
  5. Step 5: Solve for x
    x = 10,424,587,520.30/88,343.70
  6. Step 6: Final answer
    x = 118,000.35

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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.