Home / 112,882.20-155,882.84-72,665.76

Finding the Fourth Proportional to 112,882.20, 155,882.84 and 72,665.76

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Solution

The fourth proportional to 112,882.20, 155,882.84 and 72,665.76 is: 100,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,882.20 : 155,882.84 = 72,665.76 : x
  2. Step 2: Convert to fraction form
    112,882.20/155,882.84 = 72,665.76/x
  3. Step 3: Cross multiply
    112,882.20x = 155,882.84 × 72,665.76
  4. Step 4: Simplify right side
    112,882.20x = 11,327,345,039.56
  5. Step 5: Solve for x
    x = 11,327,345,039.56/112,882.20
  6. Step 6: Final answer
    x = 100,346.60

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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.