Home / 142,926.30-215,686.44-138,161.97

Finding the Fourth Proportional to 142,926.30, 215,686.44 and 138,161.97

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Solution

The fourth proportional to 142,926.30, 215,686.44 and 138,161.97 is: 208,496.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,926.30 : 215,686.44 = 138,161.97 : x
  2. Step 2: Convert to fraction form
    142,926.30/215,686.44 = 138,161.97/x
  3. Step 3: Cross multiply
    142,926.30x = 215,686.44 × 138,161.97
  4. Step 4: Simplify right side
    142,926.30x = 29,799,663,452.69
  5. Step 5: Solve for x
    x = 29,799,663,452.69/142,926.30
  6. Step 6: Final answer
    x = 208,496.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.