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Finding the Fourth Proportional to 115,560.96, 159,319.92 and 91,766.40

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Solution

The fourth proportional to 115,560.96, 159,319.92 and 91,766.40 is: 126,515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,560.96 : 159,319.92 = 91,766.40 : x
  2. Step 2: Convert to fraction form
    115,560.96/159,319.92 = 91,766.40/x
  3. Step 3: Cross multiply
    115,560.96x = 159,319.92 × 91,766.40
  4. Step 4: Simplify right side
    115,560.96x = 14,620,215,506.69
  5. Step 5: Solve for x
    x = 14,620,215,506.69/115,560.96
  6. Step 6: Final answer
    x = 126,515.18

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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.