Home / 140,064.15-209,930.17-80,777.42

Finding the Fourth Proportional to 140,064.15, 209,930.17 and 80,777.42

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Solution

The fourth proportional to 140,064.15, 209,930.17 and 80,777.42 is: 121,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,064.15 : 209,930.17 = 80,777.42 : x
  2. Step 2: Convert to fraction form
    140,064.15/209,930.17 = 80,777.42/x
  3. Step 3: Cross multiply
    140,064.15x = 209,930.17 × 80,777.42
  4. Step 4: Simplify right side
    140,064.15x = 16,957,617,512.76
  5. Step 5: Solve for x
    x = 16,957,617,512.76/140,064.15
  6. Step 6: Final answer
    x = 121,070.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.