Home / 121,440.10-182,160.15-86,010.70

Finding the Fourth Proportional to 121,440.10, 182,160.15 and 86,010.70

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Solution

The fourth proportional to 121,440.10, 182,160.15 and 86,010.70 is: 129,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,440.10 : 182,160.15 = 86,010.70 : x
  2. Step 2: Convert to fraction form
    121,440.10/182,160.15 = 86,010.70/x
  3. Step 3: Cross multiply
    121,440.10x = 182,160.15 × 86,010.70
  4. Step 4: Simplify right side
    121,440.10x = 15,667,722,013.61
  5. Step 5: Solve for x
    x = 15,667,722,013.61/121,440.10
  6. Step 6: Final answer
    x = 129,016.05

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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.