Home / 87,353,912.20-131,030,868.30-86,220,171.40

Finding the Fourth Proportional to 87,353,912.20, 131,030,868.30 and 86,220,171.40

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Solution

The fourth proportional to 87,353,912.20, 131,030,868.30 and 86,220,171.40 is: 129,330,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,353,912.20 : 131,030,868.30 = 86,220,171.40 : x
  2. Step 2: Convert to fraction form
    87,353,912.20/131,030,868.30 = 86,220,171.40/x
  3. Step 3: Cross multiply
    87,353,912.20x = 131,030,868.30 × 86,220,171.40
  4. Step 4: Simplify right side
    87,353,912.20x = 11,297,503,923,516,828
  5. Step 5: Solve for x
    x = 11,297,503,923,516,828/87,353,912.20
  6. Step 6: Final answer
    x = 129,330,257.10

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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.