Home / 115,017.12-172,540.80-40,138.56

Finding the Fourth Proportional to 115,017.12, 172,540.80 and 40,138.56

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Solution

The fourth proportional to 115,017.12, 172,540.80 and 40,138.56 is: 60,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,017.12 : 172,540.80 = 40,138.56 : x
  2. Step 2: Convert to fraction form
    115,017.12/172,540.80 = 40,138.56/x
  3. Step 3: Cross multiply
    115,017.12x = 172,540.80 × 40,138.56
  4. Step 4: Simplify right side
    115,017.12x = 6,925,539,253.25
  5. Step 5: Solve for x
    x = 6,925,539,253.25/115,017.12
  6. Step 6: Final answer
    x = 60,213.12

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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.