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Finding the Fourth Proportional to 122,959.80, 169,682.22 and 75,209.64

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Solution

The fourth proportional to 122,959.80, 169,682.22 and 75,209.64 is: 103,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,959.80 : 169,682.22 = 75,209.64 : x
  2. Step 2: Convert to fraction form
    122,959.80/169,682.22 = 75,209.64/x
  3. Step 3: Cross multiply
    122,959.80x = 169,682.22 × 75,209.64
  4. Step 4: Simplify right side
    122,959.80x = 12,761,738,680.60
  5. Step 5: Solve for x
    x = 12,761,738,680.60/122,959.80
  6. Step 6: Final answer
    x = 103,787.89

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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.