Home / 159,385.22-219,951.60-87,765.07

Finding the Fourth Proportional to 159,385.22, 219,951.60 and 87,765.07

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Solution

The fourth proportional to 159,385.22, 219,951.60 and 87,765.07 is: 121,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,385.22 : 219,951.60 = 87,765.07 : x
  2. Step 2: Convert to fraction form
    159,385.22/219,951.60 = 87,765.07/x
  3. Step 3: Cross multiply
    159,385.22x = 219,951.60 × 87,765.07
  4. Step 4: Simplify right side
    159,385.22x = 19,304,067,597.70
  5. Step 5: Solve for x
    x = 19,304,067,597.70/159,385.22
  6. Step 6: Final answer
    x = 121,115.80

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1.5x scale

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.