Home / 143,687.49-198,294.86-80,025.29

Finding the Fourth Proportional to 143,687.49, 198,294.86 and 80,025.29

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Solution

The fourth proportional to 143,687.49, 198,294.86 and 80,025.29 is: 110,438.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,687.49 : 198,294.86 = 80,025.29 : x
  2. Step 2: Convert to fraction form
    143,687.49/198,294.86 = 80,025.29/x
  3. Step 3: Cross multiply
    143,687.49x = 198,294.86 × 80,025.29
  4. Step 4: Simplify right side
    143,687.49x = 15,868,602,685.54
  5. Step 5: Solve for x
    x = 15,868,602,685.54/143,687.49
  6. Step 6: Final answer
    x = 110,438.31

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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.