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Finding the Fourth Proportional to 169,778.88, 254,668.05 and 45,119.88

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Solution

The fourth proportional to 169,778.88, 254,668.05 and 45,119.88 is: 67,679.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,778.88 : 254,668.05 = 45,119.88 : x
  2. Step 2: Convert to fraction form
    169,778.88/254,668.05 = 45,119.88/x
  3. Step 3: Cross multiply
    169,778.88x = 254,668.05 × 45,119.88
  4. Step 4: Simplify right side
    169,778.88x = 11,490,591,855.83
  5. Step 5: Solve for x
    x = 11,490,591,855.83/169,778.88
  6. Step 6: Final answer
    x = 67,679.75

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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.