Home / 119,669.40-165,028.68-78,760.44

Finding the Fourth Proportional to 119,669.40, 165,028.68 and 78,760.44

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Solution

The fourth proportional to 119,669.40, 165,028.68 and 78,760.44 is: 108,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,669.40 : 165,028.68 = 78,760.44 : x
  2. Step 2: Convert to fraction form
    119,669.40/165,028.68 = 78,760.44/x
  3. Step 3: Cross multiply
    119,669.40x = 165,028.68 × 78,760.44
  4. Step 4: Simplify right side
    119,669.40x = 12,997,731,449.42
  5. Step 5: Solve for x
    x = 12,997,731,449.42/119,669.40
  6. Step 6: Final answer
    x = 108,613.66

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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.