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Finding the Fourth Proportional to 120,885.30, 166,773.96 and 69,888.69

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Solution

The fourth proportional to 120,885.30, 166,773.96 and 69,888.69 is: 96,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,885.30 : 166,773.96 = 69,888.69 : x
  2. Step 2: Convert to fraction form
    120,885.30/166,773.96 = 69,888.69/x
  3. Step 3: Cross multiply
    120,885.30x = 166,773.96 × 69,888.69
  4. Step 4: Simplify right side
    120,885.30x = 11,655,613,590.51
  5. Step 5: Solve for x
    x = 11,655,613,590.51/120,885.30
  6. Step 6: Final answer
    x = 96,418.78

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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.