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Finding the Fourth Proportional to 159,537.60, 220,147.20 and 91,540.80

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Solution

The fourth proportional to 159,537.60, 220,147.20 and 91,540.80 is: 126,317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,537.60 : 220,147.20 = 91,540.80 : x
  2. Step 2: Convert to fraction form
    159,537.60/220,147.20 = 91,540.80/x
  3. Step 3: Cross multiply
    159,537.60x = 220,147.20 × 91,540.80
  4. Step 4: Simplify right side
    159,537.60x = 20,152,450,805.76
  5. Step 5: Solve for x
    x = 20,152,450,805.76/159,537.60
  6. Step 6: Final answer
    x = 126,317.88

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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.