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Finding the Fourth Proportional to 83,117.60, 124,983.60 and 69,600.80

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Solution

The fourth proportional to 83,117.60, 124,983.60 and 69,600.80 is: 104,658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,117.60 : 124,983.60 = 69,600.80 : x
  2. Step 2: Convert to fraction form
    83,117.60/124,983.60 = 69,600.80/x
  3. Step 3: Cross multiply
    83,117.60x = 124,983.60 × 69,600.80
  4. Step 4: Simplify right side
    83,117.60x = 8,698,958,546.88
  5. Step 5: Solve for x
    x = 8,698,958,546.88/83,117.60
  6. Step 6: Final answer
    x = 104,658.44

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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.