Home / 154,165.28-231,063.84-79,321.28

Finding the Fourth Proportional to 154,165.28, 231,063.84 and 79,321.28

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Solution

The fourth proportional to 154,165.28, 231,063.84 and 79,321.28 is: 118,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,165.28 : 231,063.84 = 79,321.28 : x
  2. Step 2: Convert to fraction form
    154,165.28/231,063.84 = 79,321.28/x
  3. Step 3: Cross multiply
    154,165.28x = 231,063.84 × 79,321.28
  4. Step 4: Simplify right side
    154,165.28x = 18,328,278,395.20
  5. Step 5: Solve for x
    x = 18,328,278,395.20/154,165.28
  6. Step 6: Final answer
    x = 118,887.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.