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Finding the Fourth Proportional to 159,774.34, 220,508.12 and 91,791.20

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Solution

The fourth proportional to 159,774.34, 220,508.12 and 91,791.20 is: 126,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,774.34 : 220,508.12 = 91,791.20 : x
  2. Step 2: Convert to fraction form
    159,774.34/220,508.12 = 91,791.20/x
  3. Step 3: Cross multiply
    159,774.34x = 220,508.12 × 91,791.20
  4. Step 4: Simplify right side
    159,774.34x = 20,240,704,944.54
  5. Step 5: Solve for x
    x = 20,240,704,944.54/159,774.34
  6. Step 6: Final answer
    x = 126,683.08

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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.