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Finding the Fourth Proportional to 122,958.68, 169,686.14 and 69,245.55

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Solution

The fourth proportional to 122,958.68, 169,686.14 and 69,245.55 is: 95,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,958.68 : 169,686.14 = 69,245.55 : x
  2. Step 2: Convert to fraction form
    122,958.68/169,686.14 = 69,245.55/x
  3. Step 3: Cross multiply
    122,958.68x = 169,686.14 × 69,245.55
  4. Step 4: Simplify right side
    122,958.68x = 11,750,009,745.45
  5. Step 5: Solve for x
    x = 11,750,009,745.45/122,958.68
  6. Step 6: Final answer
    x = 95,560.64

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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.