Home / 144,070.90-198,816.05-79,540.66

Finding the Fourth Proportional to 144,070.90, 198,816.05 and 79,540.66

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Solution

The fourth proportional to 144,070.90, 198,816.05 and 79,540.66 is: 109,765.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,070.90 : 198,816.05 = 79,540.66 : x
  2. Step 2: Convert to fraction form
    144,070.90/198,816.05 = 79,540.66/x
  3. Step 3: Cross multiply
    144,070.90x = 198,816.05 × 79,540.66
  4. Step 4: Simplify right side
    144,070.90x = 15,813,959,835.59
  5. Step 5: Solve for x
    x = 15,813,959,835.59/144,070.90
  6. Step 6: Final answer
    x = 109,765.12

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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.