Home / 143,932.38-198,631.35-80,272.86

Finding the Fourth Proportional to 143,932.38, 198,631.35 and 80,272.86

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Solution

The fourth proportional to 143,932.38, 198,631.35 and 80,272.86 is: 110,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,932.38 : 198,631.35 = 80,272.86 : x
  2. Step 2: Convert to fraction form
    143,932.38/198,631.35 = 80,272.86/x
  3. Step 3: Cross multiply
    143,932.38x = 198,631.35 × 80,272.86
  4. Step 4: Simplify right side
    143,932.38x = 15,944,706,550.16
  5. Step 5: Solve for x
    x = 15,944,706,550.16/143,932.38
  6. Step 6: Final answer
    x = 110,779.15

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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.