Home / 143,982.50-198,701.30-80,332.70

Finding the Fourth Proportional to 143,982.50, 198,701.30 and 80,332.70

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Solution

The fourth proportional to 143,982.50, 198,701.30 and 80,332.70 is: 110,862.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,982.50 : 198,701.30 = 80,332.70 : x
  2. Step 2: Convert to fraction form
    143,982.50/198,701.30 = 80,332.70/x
  3. Step 3: Cross multiply
    143,982.50x = 198,701.30 × 80,332.70
  4. Step 4: Simplify right side
    143,982.50x = 15,962,211,129.84
  5. Step 5: Solve for x
    x = 15,962,211,129.84/143,982.50
  6. Step 6: Final answer
    x = 110,862.17

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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.