Home / 143,766.64-198,399.30-79,238.18

Finding the Fourth Proportional to 143,766.64, 198,399.30 and 79,238.18

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Solution

The fourth proportional to 143,766.64, 198,399.30 and 79,238.18 is: 109,349.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,766.64 : 198,399.30 = 79,238.18 : x
  2. Step 2: Convert to fraction form
    143,766.64/198,399.30 = 79,238.18/x
  3. Step 3: Cross multiply
    143,766.64x = 198,399.30 × 79,238.18
  4. Step 4: Simplify right side
    143,766.64x = 15,720,799,445.27
  5. Step 5: Solve for x
    x = 15,720,799,445.27/143,766.64
  6. Step 6: Final answer
    x = 109,349.43

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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.