Home / 120,306.72-166,019.04-66,591.84

Finding the Fourth Proportional to 120,306.72, 166,019.04 and 66,591.84

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Solution

The fourth proportional to 120,306.72, 166,019.04 and 66,591.84 is: 91,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,306.72 : 166,019.04 = 66,591.84 : x
  2. Step 2: Convert to fraction form
    120,306.72/166,019.04 = 66,591.84/x
  3. Step 3: Cross multiply
    120,306.72x = 166,019.04 × 66,591.84
  4. Step 4: Simplify right side
    120,306.72x = 11,055,513,348.63
  5. Step 5: Solve for x
    x = 11,055,513,348.63/120,306.72
  6. Step 6: Final answer
    x = 91,894.40

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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.