Home / 112,560.38-168,719.07-73,145.78

Finding the Fourth Proportional to 112,560.38, 168,719.07 and 73,145.78

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Solution

The fourth proportional to 112,560.38, 168,719.07 and 73,145.78 is: 109,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,560.38 : 168,719.07 = 73,145.78 : x
  2. Step 2: Convert to fraction form
    112,560.38/168,719.07 = 73,145.78/x
  3. Step 3: Cross multiply
    112,560.38x = 168,719.07 × 73,145.78
  4. Step 4: Simplify right side
    112,560.38x = 12,341,087,976.02
  5. Step 5: Solve for x
    x = 12,341,087,976.02/112,560.38
  6. Step 6: Final answer
    x = 109,639.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.