Home / 115,439.20-173,115.60-40,530.40

Finding the Fourth Proportional to 115,439.20, 173,115.60 and 40,530.40

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Solution

The fourth proportional to 115,439.20, 173,115.60 and 40,530.40 is: 60,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.20 : 173,115.60 = 40,530.40 : x
  2. Step 2: Convert to fraction form
    115,439.20/173,115.60 = 40,530.40/x
  3. Step 3: Cross multiply
    115,439.20x = 173,115.60 × 40,530.40
  4. Step 4: Simplify right side
    115,439.20x = 7,016,444,514.24
  5. Step 5: Solve for x
    x = 7,016,444,514.24/115,439.20
  6. Step 6: Final answer
    x = 60,780.43

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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.