Home / 172,440.15-258,286.38-83,507.17

Finding the Fourth Proportional to 172,440.15, 258,286.38 and 83,507.17

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Solution

The fourth proportional to 172,440.15, 258,286.38 and 83,507.17 is: 125,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,440.15 : 258,286.38 = 83,507.17 : x
  2. Step 2: Convert to fraction form
    172,440.15/258,286.38 = 83,507.17/x
  3. Step 3: Cross multiply
    172,440.15x = 258,286.38 × 83,507.17
  4. Step 4: Simplify right side
    172,440.15x = 21,568,764,643.34
  5. Step 5: Solve for x
    x = 21,568,764,643.34/172,440.15
  6. Step 6: Final answer
    x = 125,079.71

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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.