Home / 115,156.20-158,842.87-79,283.93

Finding the Fourth Proportional to 115,156.20, 158,842.87 and 79,283.93

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Solution

The fourth proportional to 115,156.20, 158,842.87 and 79,283.93 is: 109,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,156.20 : 158,842.87 = 79,283.93 : x
  2. Step 2: Convert to fraction form
    115,156.20/158,842.87 = 79,283.93/x
  3. Step 3: Cross multiply
    115,156.20x = 158,842.87 × 79,283.93
  4. Step 4: Simplify right side
    115,156.20x = 12,593,686,589.66
  5. Step 5: Solve for x
    x = 12,593,686,589.66/115,156.20
  6. Step 6: Final answer
    x = 109,361.78

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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.