Home / 109,508.29-151,121.42-61,761.54

Finding the Fourth Proportional to 109,508.29, 151,121.42 and 61,761.54

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Solution

The fourth proportional to 109,508.29, 151,121.42 and 61,761.54 is: 85,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,508.29 : 151,121.42 = 61,761.54 : x
  2. Step 2: Convert to fraction form
    109,508.29/151,121.42 = 61,761.54/x
  3. Step 3: Cross multiply
    109,508.29x = 151,121.42 × 61,761.54
  4. Step 4: Simplify right side
    109,508.29x = 9,333,490,561.77
  5. Step 5: Solve for x
    x = 9,333,490,561.77/109,508.29
  6. Step 6: Final answer
    x = 85,230.90

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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.