Home / 143,836.32-198,470.40-83,382.20

Finding the Fourth Proportional to 143,836.32, 198,470.40 and 83,382.20

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Solution

The fourth proportional to 143,836.32, 198,470.40 and 83,382.20 is: 115,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,836.32 : 198,470.40 = 83,382.20 : x
  2. Step 2: Convert to fraction form
    143,836.32/198,470.40 = 83,382.20/x
  3. Step 3: Cross multiply
    143,836.32x = 198,470.40 × 83,382.20
  4. Step 4: Simplify right side
    143,836.32x = 16,548,898,586.88
  5. Step 5: Solve for x
    x = 16,548,898,586.88/143,836.32
  6. Step 6: Final answer
    x = 115,053.68

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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.