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Finding the Fourth Proportional to 159,772.63, 220,505.76 and 91,789.48

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Solution

The fourth proportional to 159,772.63, 220,505.76 and 91,789.48 is: 126,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,772.63 : 220,505.76 = 91,789.48 : x
  2. Step 2: Convert to fraction form
    159,772.63/220,505.76 = 91,789.48/x
  3. Step 3: Cross multiply
    159,772.63x = 220,505.76 × 91,789.48
  4. Step 4: Simplify right side
    159,772.63x = 20,240,109,047.40
  5. Step 5: Solve for x
    x = 20,240,109,047.40/159,772.63
  6. Step 6: Final answer
    x = 126,680.70

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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.