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Finding the Fourth Proportional to 181,120.91, 249,934.31 and 100,542.11

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Solution

The fourth proportional to 181,120.91, 249,934.31 and 100,542.11 is: 138,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,120.91 : 249,934.31 = 100,542.11 : x
  2. Step 2: Convert to fraction form
    181,120.91/249,934.31 = 100,542.11/x
  3. Step 3: Cross multiply
    181,120.91x = 249,934.31 × 100,542.11
  4. Step 4: Simplify right side
    181,120.91x = 25,128,923,010.92
  5. Step 5: Solve for x
    x = 25,128,923,010.92/181,120.91
  6. Step 6: Final answer
    x = 138,741.15

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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.