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Finding the Fourth Proportional to 78,169.60, 107,922.96 and 60,230.56

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Solution

The fourth proportional to 78,169.60, 107,922.96 and 60,230.56 is: 83,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,169.60 : 107,922.96 = 60,230.56 : x
  2. Step 2: Convert to fraction form
    78,169.60/107,922.96 = 60,230.56/x
  3. Step 3: Cross multiply
    78,169.60x = 107,922.96 × 60,230.56
  4. Step 4: Simplify right side
    78,169.60x = 6,500,260,317.66
  5. Step 5: Solve for x
    x = 6,500,260,317.66/78,169.60
  6. Step 6: Final answer
    x = 83,155.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.