Home / 131,727.20-181,781.70-75,139.52

Finding the Fourth Proportional to 131,727.20, 181,781.70 and 75,139.52

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Solution

The fourth proportional to 131,727.20, 181,781.70 and 75,139.52 is: 103,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,727.20 : 181,781.70 = 75,139.52 : x
  2. Step 2: Convert to fraction form
    131,727.20/181,781.70 = 75,139.52/x
  3. Step 3: Cross multiply
    131,727.20x = 181,781.70 × 75,139.52
  4. Step 4: Simplify right side
    131,727.20x = 13,658,989,682.78
  5. Step 5: Solve for x
    x = 13,658,989,682.78/131,727.20
  6. Step 6: Final answer
    x = 103,691.49

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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.