Home / 159,139.20-219,614.28-91,156.14

Finding the Fourth Proportional to 159,139.20, 219,614.28 and 91,156.14

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Solution

The fourth proportional to 159,139.20, 219,614.28 and 91,156.14 is: 125,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,139.20 : 219,614.28 = 91,156.14 : x
  2. Step 2: Convert to fraction form
    159,139.20/219,614.28 = 91,156.14/x
  3. Step 3: Cross multiply
    159,139.20x = 219,614.28 × 91,156.14
  4. Step 4: Simplify right side
    159,139.20x = 20,019,189,711.84
  5. Step 5: Solve for x
    x = 20,019,189,711.84/159,139.20
  6. Step 6: Final answer
    x = 125,796.72

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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.