Home / 120,711.26-166,564.50-72,301.85

Finding the Fourth Proportional to 120,711.26, 166,564.50 and 72,301.85

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Solution

The fourth proportional to 120,711.26, 166,564.50 and 72,301.85 is: 99,766.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,711.26 : 166,564.50 = 72,301.85 : x
  2. Step 2: Convert to fraction form
    120,711.26/166,564.50 = 72,301.85/x
  3. Step 3: Cross multiply
    120,711.26x = 166,564.50 × 72,301.85
  4. Step 4: Simplify right side
    120,711.26x = 12,042,921,494.33
  5. Step 5: Solve for x
    x = 12,042,921,494.33/120,711.26
  6. Step 6: Final answer
    x = 99,766.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.