Home / 80,129.99-120,162.18-35,726.38

Finding the Fourth Proportional to 80,129.99, 120,162.18 and 35,726.38

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Solution

The fourth proportional to 80,129.99, 120,162.18 and 35,726.38 is: 53,574.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,129.99 : 120,162.18 = 35,726.38 : x
  2. Step 2: Convert to fraction form
    80,129.99/120,162.18 = 35,726.38/x
  3. Step 3: Cross multiply
    80,129.99x = 120,162.18 × 35,726.38
  4. Step 4: Simplify right side
    80,129.99x = 4,292,959,704.31
  5. Step 5: Solve for x
    x = 4,292,959,704.31/80,129.99
  6. Step 6: Final answer
    x = 53,574.94

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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.