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Finding the Fourth Proportional to 159,791.40, 220,506.84 and 88,171.47

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Solution

The fourth proportional to 159,791.40, 220,506.84 and 88,171.47 is: 121,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,791.40 : 220,506.84 = 88,171.47 : x
  2. Step 2: Convert to fraction form
    159,791.40/220,506.84 = 88,171.47/x
  3. Step 3: Cross multiply
    159,791.40x = 220,506.84 × 88,171.47
  4. Step 4: Simplify right side
    159,791.40x = 19,442,412,227.85
  5. Step 5: Solve for x
    x = 19,442,412,227.85/159,791.40
  6. Step 6: Final answer
    x = 121,673.71

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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.