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Finding the Fourth Proportional to 121,737.89, 168,105.17 and 76,494.26

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Solution

The fourth proportional to 121,737.89, 168,105.17 and 76,494.26 is: 105,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,737.89 : 168,105.17 = 76,494.26 : x
  2. Step 2: Convert to fraction form
    121,737.89/168,105.17 = 76,494.26/x
  3. Step 3: Cross multiply
    121,737.89x = 168,105.17 × 76,494.26
  4. Step 4: Simplify right side
    121,737.89x = 12,859,080,198.85
  5. Step 5: Solve for x
    x = 12,859,080,198.85/121,737.89
  6. Step 6: Final answer
    x = 105,629.24

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1.5x scale

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.