Home / 151,854.90-209,600.30-87,331.19

Finding the Fourth Proportional to 151,854.90, 209,600.30 and 87,331.19

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Solution

The fourth proportional to 151,854.90, 209,600.30 and 87,331.19 is: 120,540.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,854.90 : 209,600.30 = 87,331.19 : x
  2. Step 2: Convert to fraction form
    151,854.90/209,600.30 = 87,331.19/x
  3. Step 3: Cross multiply
    151,854.90x = 209,600.30 × 87,331.19
  4. Step 4: Simplify right side
    151,854.90x = 18,304,642,769.14
  5. Step 5: Solve for x
    x = 18,304,642,769.14/151,854.90
  6. Step 6: Final answer
    x = 120,540.35

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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.