Home / 120,581.68-166,394.60-66,864.72

Finding the Fourth Proportional to 120,581.68, 166,394.60 and 66,864.72

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Solution

The fourth proportional to 120,581.68, 166,394.60 and 66,864.72 is: 92,268.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,581.68 : 166,394.60 = 66,864.72 : x
  2. Step 2: Convert to fraction form
    120,581.68/166,394.60 = 66,864.72/x
  3. Step 3: Cross multiply
    120,581.68x = 166,394.60 × 66,864.72
  4. Step 4: Simplify right side
    120,581.68x = 11,125,928,338.51
  5. Step 5: Solve for x
    x = 11,125,928,338.51/120,581.68
  6. Step 6: Final answer
    x = 92,268.81

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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.