Home / 143,864.88-198,534.40-80,206.72

Finding the Fourth Proportional to 143,864.88, 198,534.40 and 80,206.72

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Solution

The fourth proportional to 143,864.88, 198,534.40 and 80,206.72 is: 110,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,864.88 : 198,534.40 = 80,206.72 : x
  2. Step 2: Convert to fraction form
    143,864.88/198,534.40 = 80,206.72/x
  3. Step 3: Cross multiply
    143,864.88x = 198,534.40 × 80,206.72
  4. Step 4: Simplify right side
    143,864.88x = 15,923,793,031.17
  5. Step 5: Solve for x
    x = 15,923,793,031.17/143,864.88
  6. Step 6: Final answer
    x = 110,685.76

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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.