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Finding the Fourth Proportional to 159,443.20, 220,033.02 and 87,825.70

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Solution

The fourth proportional to 159,443.20, 220,033.02 and 87,825.70 is: 121,200.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,443.20 : 220,033.02 = 87,825.70 : x
  2. Step 2: Convert to fraction form
    159,443.20/220,033.02 = 87,825.70/x
  3. Step 3: Cross multiply
    159,443.20x = 220,033.02 × 87,825.70
  4. Step 4: Simplify right side
    159,443.20x = 19,324,554,004.61
  5. Step 5: Solve for x
    x = 19,324,554,004.61/159,443.20
  6. Step 6: Final answer
    x = 121,200.24

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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.