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Finding the Fourth Proportional to 144,100.95, 198,851.06 and 80,442.78

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Solution

The fourth proportional to 144,100.95, 198,851.06 and 80,442.78 is: 111,006.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,100.95 : 198,851.06 = 80,442.78 : x
  2. Step 2: Convert to fraction form
    144,100.95/198,851.06 = 80,442.78/x
  3. Step 3: Cross multiply
    144,100.95x = 198,851.06 × 80,442.78
  4. Step 4: Simplify right side
    144,100.95x = 15,996,131,670.13
  5. Step 5: Solve for x
    x = 15,996,131,670.13/144,100.95
  6. Step 6: Final answer
    x = 111,006.43

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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.