Home / 143,777.34-198,412.23-80,115.90

Finding the Fourth Proportional to 143,777.34, 198,412.23 and 80,115.90

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Solution

The fourth proportional to 143,777.34, 198,412.23 and 80,115.90 is: 110,559.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,777.34 : 198,412.23 = 80,115.90 : x
  2. Step 2: Convert to fraction form
    143,777.34/198,412.23 = 80,115.90/x
  3. Step 3: Cross multiply
    143,777.34x = 198,412.23 × 80,115.90
  4. Step 4: Simplify right side
    143,777.34x = 15,895,974,377.46
  5. Step 5: Solve for x
    x = 15,895,974,377.46/143,777.34
  6. Step 6: Final answer
    x = 110,559.66

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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.