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Finding the Fourth Proportional to 122,228.55, 168,672.15 and 68,517.05

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Solution

The fourth proportional to 122,228.55, 168,672.15 and 68,517.05 is: 94,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,228.55 : 168,672.15 = 68,517.05 : x
  2. Step 2: Convert to fraction form
    122,228.55/168,672.15 = 68,517.05/x
  3. Step 3: Cross multiply
    122,228.55x = 168,672.15 × 68,517.05
  4. Step 4: Simplify right side
    122,228.55x = 11,556,917,291.80
  5. Step 5: Solve for x
    x = 11,556,917,291.80/122,228.55
  6. Step 6: Final answer
    x = 94,551.70

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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.