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Finding the Fourth Proportional to 159,790.46, 220,503.42 and 91,759.55

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Solution

The fourth proportional to 159,790.46, 220,503.42 and 91,759.55 is: 126,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,790.46 : 220,503.42 = 91,759.55 : x
  2. Step 2: Convert to fraction form
    159,790.46/220,503.42 = 91,759.55/x
  3. Step 3: Cross multiply
    159,790.46x = 220,503.42 × 91,759.55
  4. Step 4: Simplify right side
    159,790.46x = 20,233,293,490.14
  5. Step 5: Solve for x
    x = 20,233,293,490.14/159,790.46
  6. Step 6: Final answer
    x = 126,623.92

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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.