Home / 254,169.43-381,233.39-85,686.12

Finding the Fourth Proportional to 254,169.43, 381,233.39 and 85,686.12

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Solution

The fourth proportional to 254,169.43, 381,233.39 and 85,686.12 is: 128,522.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,169.43 : 381,233.39 = 85,686.12 : x
  2. Step 2: Convert to fraction form
    254,169.43/381,233.39 = 85,686.12/x
  3. Step 3: Cross multiply
    254,169.43x = 381,233.39 × 85,686.12
  4. Step 4: Simplify right side
    254,169.43x = 32,666,409,575.12
  5. Step 5: Solve for x
    x = 32,666,409,575.12/254,169.43
  6. Step 6: Final answer
    x = 128,522.18

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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.