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Finding the Fourth Proportional to 120,671.70, 166,559.25 and 75,322.37

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Solution

The fourth proportional to 120,671.70, 166,559.25 and 75,322.37 is: 103,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,671.70 : 166,559.25 = 75,322.37 : x
  2. Step 2: Convert to fraction form
    120,671.70/166,559.25 = 75,322.37/x
  3. Step 3: Cross multiply
    120,671.70x = 166,559.25 × 75,322.37
  4. Step 4: Simplify right side
    120,671.70x = 12,545,637,983.93
  5. Step 5: Solve for x
    x = 12,545,637,983.93/120,671.70
  6. Step 6: Final answer
    x = 103,965.04

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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.