Home / 138,960-191,923.20-94,170.24

Finding the Fourth Proportional to 138,960, 191,923.20 and 94,170.24

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Solution

The fourth proportional to 138,960, 191,923.20 and 94,170.24 is: 130,062.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,960 : 191,923.20 = 94,170.24 : x
  2. Step 2: Convert to fraction form
    138,960/191,923.20 = 94,170.24/x
  3. Step 3: Cross multiply
    138,960x = 191,923.20 × 94,170.24
  4. Step 4: Simplify right side
    138,960x = 18,073,453,805.57
  5. Step 5: Solve for x
    x = 18,073,453,805.57/138,960
  6. Step 6: Final answer
    x = 130,062.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.