Home / 115,120,125.72-172,769,734.08-80,350,648.92

Finding the Fourth Proportional to 115,120,125.72, 172,769,734.08 and 80,350,648.92

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Solution

The fourth proportional to 115,120,125.72, 172,769,734.08 and 80,350,648.92 is: 120,588,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,120,125.72 : 172,769,734.08 = 80,350,648.92 : x
  2. Step 2: Convert to fraction form
    115,120,125.72/172,769,734.08 = 80,350,648.92/x
  3. Step 3: Cross multiply
    115,120,125.72x = 172,769,734.08 × 80,350,648.92
  4. Step 4: Simplify right side
    115,120,125.72x = 13,882,160,247,063,840
  5. Step 5: Solve for x
    x = 13,882,160,247,063,840/115,120,125.72
  6. Step 6: Final answer
    x = 120,588,473.65

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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.