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Finding the Fourth Proportional to 83,108.89, 125,224.33 and 68,641.89

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Solution

The fourth proportional to 83,108.89, 125,224.33 and 68,641.89 is: 103,426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,108.89 : 125,224.33 = 68,641.89 : x
  2. Step 2: Convert to fraction form
    83,108.89/125,224.33 = 68,641.89/x
  3. Step 3: Cross multiply
    83,108.89x = 125,224.33 × 68,641.89
  4. Step 4: Simplify right side
    83,108.89x = 8,595,634,685.18
  5. Step 5: Solve for x
    x = 8,595,634,685.18/83,108.89
  6. Step 6: Final answer
    x = 103,426.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.