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Finding the Fourth Proportional to 82,375.32, 122,503.26 and 79,750.92

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Solution

The fourth proportional to 82,375.32, 122,503.26 and 79,750.92 is: 118,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,375.32 : 122,503.26 = 79,750.92 : x
  2. Step 2: Convert to fraction form
    82,375.32/122,503.26 = 79,750.92/x
  3. Step 3: Cross multiply
    82,375.32x = 122,503.26 × 79,750.92
  4. Step 4: Simplify right side
    82,375.32x = 9,769,747,688.00
  5. Step 5: Solve for x
    x = 9,769,747,688.00/82,375.32
  6. Step 6: Final answer
    x = 118,600.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.