Home / 154,405.45-231,573.31-78,427.04

Finding the Fourth Proportional to 154,405.45, 231,573.31 and 78,427.04

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Solution

The fourth proportional to 154,405.45, 231,573.31 and 78,427.04 is: 117,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,405.45 : 231,573.31 = 78,427.04 : x
  2. Step 2: Convert to fraction form
    154,405.45/231,573.31 = 78,427.04/x
  3. Step 3: Cross multiply
    154,405.45x = 231,573.31 × 78,427.04
  4. Step 4: Simplify right side
    154,405.45x = 18,161,609,246.30
  5. Step 5: Solve for x
    x = 18,161,609,246.30/154,405.45
  6. Step 6: Final answer
    x = 117,622.85

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1.5x scale

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.