Home / 147,511.38-203,565.42-80,443.38

Finding the Fourth Proportional to 147,511.38, 203,565.42 and 80,443.38

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Solution

The fourth proportional to 147,511.38, 203,565.42 and 80,443.38 is: 111,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,511.38 : 203,565.42 = 80,443.38 : x
  2. Step 2: Convert to fraction form
    147,511.38/203,565.42 = 80,443.38/x
  3. Step 3: Cross multiply
    147,511.38x = 203,565.42 × 80,443.38
  4. Step 4: Simplify right side
    147,511.38x = 16,375,490,435.92
  5. Step 5: Solve for x
    x = 16,375,490,435.92/147,511.38
  6. Step 6: Final answer
    x = 111,011.71

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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.