Home / 151,531.11-209,098.65-87,862

Finding the Fourth Proportional to 151,531.11, 209,098.65 and 87,862

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Solution

The fourth proportional to 151,531.11, 209,098.65 and 87,862 is: 121,241.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,531.11 : 209,098.65 = 87,862 : x
  2. Step 2: Convert to fraction form
    151,531.11/209,098.65 = 87,862/x
  3. Step 3: Cross multiply
    151,531.11x = 209,098.65 × 87,862
  4. Step 4: Simplify right side
    151,531.11x = 18,371,825,586.30
  5. Step 5: Solve for x
    x = 18,371,825,586.30/151,531.11
  6. Step 6: Final answer
    x = 121,241.28

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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.