Home / 115,439.20-172,867.20-92,111.20

Finding the Fourth Proportional to 115,439.20, 172,867.20 and 92,111.20

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Solution

The fourth proportional to 115,439.20, 172,867.20 and 92,111.20 is: 137,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.20 : 172,867.20 = 92,111.20 : x
  2. Step 2: Convert to fraction form
    115,439.20/172,867.20 = 92,111.20/x
  3. Step 3: Cross multiply
    115,439.20x = 172,867.20 × 92,111.20
  4. Step 4: Simplify right side
    115,439.20x = 15,923,005,232.64
  5. Step 5: Solve for x
    x = 15,923,005,232.64/115,439.20
  6. Step 6: Final answer
    x = 137,934.13

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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.