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Finding the Fourth Proportional to 159,749.42, 220,454.76 and 88,129.11

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Solution

The fourth proportional to 159,749.42, 220,454.76 and 88,129.11 is: 121,618.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,749.42 : 220,454.76 = 88,129.11 : x
  2. Step 2: Convert to fraction form
    159,749.42/220,454.76 = 88,129.11/x
  3. Step 3: Cross multiply
    159,749.42x = 220,454.76 × 88,129.11
  4. Step 4: Simplify right side
    159,749.42x = 19,428,482,951.25
  5. Step 5: Solve for x
    x = 19,428,482,951.25/159,749.42
  6. Step 6: Final answer
    x = 121,618.49

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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.