Home / 120,817.29-166,741.05-69,139.14

Finding the Fourth Proportional to 120,817.29, 166,741.05 and 69,139.14

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Solution

The fourth proportional to 120,817.29, 166,741.05 and 69,139.14 is: 95,419.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,817.29 : 166,741.05 = 69,139.14 : x
  2. Step 2: Convert to fraction form
    120,817.29/166,741.05 = 69,139.14/x
  3. Step 3: Cross multiply
    120,817.29x = 166,741.05 × 69,139.14
  4. Step 4: Simplify right side
    120,817.29x = 11,528,332,799.70
  5. Step 5: Solve for x
    x = 11,528,332,799.70/120,817.29
  6. Step 6: Final answer
    x = 95,419.56

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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.