Home / 120,269.13-165,960.11-71,861.41

Finding the Fourth Proportional to 120,269.13, 165,960.11 and 71,861.41

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Solution

The fourth proportional to 120,269.13, 165,960.11 and 71,861.41 is: 99,162.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,269.13 : 165,960.11 = 71,861.41 : x
  2. Step 2: Convert to fraction form
    120,269.13/165,960.11 = 71,861.41/x
  3. Step 3: Cross multiply
    120,269.13x = 165,960.11 × 71,861.41
  4. Step 4: Simplify right side
    120,269.13x = 11,926,127,895.46
  5. Step 5: Solve for x
    x = 11,926,127,895.46/120,269.13
  6. Step 6: Final answer
    x = 99,162.01

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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.