Home / 141,803.28-195,692.76-78,145.20

Finding the Fourth Proportional to 141,803.28, 195,692.76 and 78,145.20

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Solution

The fourth proportional to 141,803.28, 195,692.76 and 78,145.20 is: 107,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.28 : 195,692.76 = 78,145.20 : x
  2. Step 2: Convert to fraction form
    141,803.28/195,692.76 = 78,145.20/x
  3. Step 3: Cross multiply
    141,803.28x = 195,692.76 × 78,145.20
  4. Step 4: Simplify right side
    141,803.28x = 15,292,449,868.75
  5. Step 5: Solve for x
    x = 15,292,449,868.75/141,803.28
  6. Step 6: Final answer
    x = 107,842.71

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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.