Home / 131,221.52-181,082.46-74,629.28

Finding the Fourth Proportional to 131,221.52, 181,082.46 and 74,629.28

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Solution

The fourth proportional to 131,221.52, 181,082.46 and 74,629.28 is: 102,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,221.52 : 181,082.46 = 74,629.28 : x
  2. Step 2: Convert to fraction form
    131,221.52/181,082.46 = 74,629.28/x
  3. Step 3: Cross multiply
    131,221.52x = 181,082.46 × 74,629.28
  4. Step 4: Simplify right side
    131,221.52x = 13,514,053,610.43
  5. Step 5: Solve for x
    x = 13,514,053,610.43/131,221.52
  6. Step 6: Final answer
    x = 102,986.57

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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.