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Finding the Fourth Proportional to 84,227.60, 126,187.80 and 68,560.40

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Solution

The fourth proportional to 84,227.60, 126,187.80 and 68,560.40 is: 102,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,227.60 : 126,187.80 = 68,560.40 : x
  2. Step 2: Convert to fraction form
    84,227.60/126,187.80 = 68,560.40/x
  3. Step 3: Cross multiply
    84,227.60x = 126,187.80 × 68,560.40
  4. Step 4: Simplify right side
    84,227.60x = 8,651,486,043.12
  5. Step 5: Solve for x
    x = 8,651,486,043.12/84,227.60
  6. Step 6: Final answer
    x = 102,715.57

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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.