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Finding the Fourth Proportional to 159,538.71, 220,164.30 and 91,550.28

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Solution

The fourth proportional to 159,538.71, 220,164.30 and 91,550.28 is: 126,339.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,538.71 : 220,164.30 = 91,550.28 : x
  2. Step 2: Convert to fraction form
    159,538.71/220,164.30 = 91,550.28/x
  3. Step 3: Cross multiply
    159,538.71x = 220,164.30 × 91,550.28
  4. Step 4: Simplify right side
    159,538.71x = 20,156,103,311.00
  5. Step 5: Solve for x
    x = 20,156,103,311.00/159,538.71
  6. Step 6: Final answer
    x = 126,339.89

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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.