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Finding the Fourth Proportional to 181,062.69, 249,863.39 and 100,493.61

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Solution

The fourth proportional to 181,062.69, 249,863.39 and 100,493.61 is: 138,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,062.69 : 249,863.39 = 100,493.61 : x
  2. Step 2: Convert to fraction form
    181,062.69/249,863.39 = 100,493.61/x
  3. Step 3: Cross multiply
    181,062.69x = 249,863.39 × 100,493.61
  4. Step 4: Simplify right side
    181,062.69x = 25,109,672,818.62
  5. Step 5: Solve for x
    x = 25,109,672,818.62/181,062.69
  6. Step 6: Final answer
    x = 138,679.45

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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.