Home / 159,549.12-220,179.29-87,931.76

Finding the Fourth Proportional to 159,549.12, 220,179.29 and 87,931.76

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Solution

The fourth proportional to 159,549.12, 220,179.29 and 87,931.76 is: 121,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,549.12 : 220,179.29 = 87,931.76 : x
  2. Step 2: Convert to fraction form
    159,549.12/220,179.29 = 87,931.76/x
  3. Step 3: Cross multiply
    159,549.12x = 220,179.29 × 87,931.76
  4. Step 4: Simplify right side
    159,549.12x = 19,360,750,944.70
  5. Step 5: Solve for x
    x = 19,360,750,944.70/159,549.12
  6. Step 6: Final answer
    x = 121,346.65

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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.