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Finding the Fourth Proportional to 120,373.97, 166,107.02 and 65,914.20

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Solution

The fourth proportional to 120,373.97, 166,107.02 and 65,914.20 is: 90,956.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,373.97 : 166,107.02 = 65,914.20 : x
  2. Step 2: Convert to fraction form
    120,373.97/166,107.02 = 65,914.20/x
  3. Step 3: Cross multiply
    120,373.97x = 166,107.02 × 65,914.20
  4. Step 4: Simplify right side
    120,373.97x = 10,948,811,008.11
  5. Step 5: Solve for x
    x = 10,948,811,008.11/120,373.97
  6. Step 6: Final answer
    x = 90,956.64

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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.