Home / 154,407.45-231,576.31-78,429.04

Finding the Fourth Proportional to 154,407.45, 231,576.31 and 78,429.04

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Solution

The fourth proportional to 154,407.45, 231,576.31 and 78,429.04 is: 117,625.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,407.45 : 231,576.31 = 78,429.04 : x
  2. Step 2: Convert to fraction form
    154,407.45/231,576.31 = 78,429.04/x
  3. Step 3: Cross multiply
    154,407.45x = 231,576.31 × 78,429.04
  4. Step 4: Simplify right side
    154,407.45x = 18,162,307,680.04
  5. Step 5: Solve for x
    x = 18,162,307,680.04/154,407.45
  6. Step 6: Final answer
    x = 117,625.85

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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.