Home / 143,937.92-198,635.40-80,279.84

Finding the Fourth Proportional to 143,937.92, 198,635.40 and 80,279.84

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Solution

The fourth proportional to 143,937.92, 198,635.40 and 80,279.84 is: 110,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,937.92 : 198,635.40 = 80,279.84 : x
  2. Step 2: Convert to fraction form
    143,937.92/198,635.40 = 80,279.84/x
  3. Step 3: Cross multiply
    143,937.92x = 198,635.40 × 80,279.84
  4. Step 4: Simplify right side
    143,937.92x = 15,946,418,130.34
  5. Step 5: Solve for x
    x = 15,946,418,130.34/143,937.92
  6. Step 6: Final answer
    x = 110,786.78

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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.