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Finding the Fourth Proportional to 122,769.60, 169,419.24 and 75,022.80

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Solution

The fourth proportional to 122,769.60, 169,419.24 and 75,022.80 is: 103,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,769.60 : 169,419.24 = 75,022.80 : x
  2. Step 2: Convert to fraction form
    122,769.60/169,419.24 = 75,022.80/x
  3. Step 3: Cross multiply
    122,769.60x = 169,419.24 × 75,022.80
  4. Step 4: Simplify right side
    122,769.60x = 12,710,305,758.67
  5. Step 5: Solve for x
    x = 12,710,305,758.67/122,769.60
  6. Step 6: Final answer
    x = 103,529.75

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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.