Home / 115,120,126.72-172,769,735.58-80,350,649.92

Finding the Fourth Proportional to 115,120,126.72, 172,769,735.58 and 80,350,649.92

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Solution

The fourth proportional to 115,120,126.72, 172,769,735.58 and 80,350,649.92 is: 120,588,475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,120,126.72 : 172,769,735.58 = 80,350,649.92 : x
  2. Step 2: Convert to fraction form
    115,120,126.72/172,769,735.58 = 80,350,649.92/x
  3. Step 3: Cross multiply
    115,120,126.72x = 172,769,735.58 × 80,350,649.92
  4. Step 4: Simplify right side
    115,120,126.72x = 13,882,160,540,359,550
  5. Step 5: Solve for x
    x = 13,882,160,540,359,550/115,120,126.72
  6. Step 6: Final answer
    x = 120,588,475.15

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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.