Home / 138,832.46-191,587.92-75,170.06

Finding the Fourth Proportional to 138,832.46, 191,587.92 and 75,170.06

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Solution

The fourth proportional to 138,832.46, 191,587.92 and 75,170.06 is: 103,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,832.46 : 191,587.92 = 75,170.06 : x
  2. Step 2: Convert to fraction form
    138,832.46/191,587.92 = 75,170.06/x
  3. Step 3: Cross multiply
    138,832.46x = 191,587.92 × 75,170.06
  4. Step 4: Simplify right side
    138,832.46x = 14,401,675,441.68
  5. Step 5: Solve for x
    x = 14,401,675,441.68/138,832.46
  6. Step 6: Final answer
    x = 103,734.21

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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.