Home / 159,542.46-220,165.29-87,920.64

Finding the Fourth Proportional to 159,542.46, 220,165.29 and 87,920.64

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Solution

The fourth proportional to 159,542.46, 220,165.29 and 87,920.64 is: 121,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,542.46 : 220,165.29 = 87,920.64 : x
  2. Step 2: Convert to fraction form
    159,542.46/220,165.29 = 87,920.64/x
  3. Step 3: Cross multiply
    159,542.46x = 220,165.29 × 87,920.64
  4. Step 4: Simplify right side
    159,542.46x = 19,357,073,202.59
  5. Step 5: Solve for x
    x = 19,357,073,202.59/159,542.46
  6. Step 6: Final answer
    x = 121,328.66

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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.