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Finding the Fourth Proportional to 122,758.58, 169,405.17 and 69,043.58

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Solution

The fourth proportional to 122,758.58, 169,405.17 and 69,043.58 is: 95,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,758.58 : 169,405.17 = 69,043.58 : x
  2. Step 2: Convert to fraction form
    122,758.58/169,405.17 = 69,043.58/x
  3. Step 3: Cross multiply
    122,758.58x = 169,405.17 × 69,043.58
  4. Step 4: Simplify right side
    122,758.58x = 11,696,339,234.70
  5. Step 5: Solve for x
    x = 11,696,339,234.70/122,758.58
  6. Step 6: Final answer
    x = 95,279.20

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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.