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Finding the Fourth Proportional to 129,766.80, 194,656.60 and 67,558.80

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Solution

The fourth proportional to 129,766.80, 194,656.60 and 67,558.80 is: 101,341.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,766.80 : 194,656.60 = 67,558.80 : x
  2. Step 2: Convert to fraction form
    129,766.80/194,656.60 = 67,558.80/x
  3. Step 3: Cross multiply
    129,766.80x = 194,656.60 × 67,558.80
  4. Step 4: Simplify right side
    129,766.80x = 13,150,766,308.08
  5. Step 5: Solve for x
    x = 13,150,766,308.08/129,766.80
  6. Step 6: Final answer
    x = 101,341.53

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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.