Home / 154,057.20-231,118.20-87,442.80

Finding the Fourth Proportional to 154,057.20, 231,118.20 and 87,442.80

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Solution

The fourth proportional to 154,057.20, 231,118.20 and 87,442.80 is: 131,182.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,057.20 : 231,118.20 = 87,442.80 : x
  2. Step 2: Convert to fraction form
    154,057.20/231,118.20 = 87,442.80/x
  3. Step 3: Cross multiply
    154,057.20x = 231,118.20 × 87,442.80
  4. Step 4: Simplify right side
    154,057.20x = 20,209,622,538.96
  5. Step 5: Solve for x
    x = 20,209,622,538.96/154,057.20
  6. Step 6: Final answer
    x = 131,182.59

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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.