Home / 143,839.40-198,500.98-80,170.36

Finding the Fourth Proportional to 143,839.40, 198,500.98 and 80,170.36

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Solution

The fourth proportional to 143,839.40, 198,500.98 and 80,170.36 is: 110,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,839.40 : 198,500.98 = 80,170.36 : x
  2. Step 2: Convert to fraction form
    143,839.40/198,500.98 = 80,170.36/x
  3. Step 3: Cross multiply
    143,839.40x = 198,500.98 × 80,170.36
  4. Step 4: Simplify right side
    143,839.40x = 15,913,895,026.95
  5. Step 5: Solve for x
    x = 15,913,895,026.95/143,839.40
  6. Step 6: Final answer
    x = 110,636.55

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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.