Home / 143,534.38-198,074.82-79,871.62

Finding the Fourth Proportional to 143,534.38, 198,074.82 and 79,871.62

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Solution

The fourth proportional to 143,534.38, 198,074.82 and 79,871.62 is: 110,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,534.38 : 198,074.82 = 79,871.62 : x
  2. Step 2: Convert to fraction form
    143,534.38/198,074.82 = 79,871.62/x
  3. Step 3: Cross multiply
    143,534.38x = 198,074.82 × 79,871.62
  4. Step 4: Simplify right side
    143,534.38x = 15,820,556,754.61
  5. Step 5: Solve for x
    x = 15,820,556,754.61/143,534.38
  6. Step 6: Final answer
    x = 110,221.38

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1.5x scale

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.