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Finding the Fourth Proportional to 89,836,782.80, 134,503,231.80 and 87,317,358.80

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Solution

The fourth proportional to 89,836,782.80, 134,503,231.80 and 87,317,358.80 is: 130,731,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,836,782.80 : 134,503,231.80 = 87,317,358.80 : x
  2. Step 2: Convert to fraction form
    89,836,782.80/134,503,231.80 = 87,317,358.80/x
  3. Step 3: Cross multiply
    89,836,782.80x = 134,503,231.80 × 87,317,358.80
  4. Step 4: Simplify right side
    89,836,782.80x = 11,744,466,950,840,170
  5. Step 5: Solve for x
    x = 11,744,466,950,840,170/89,836,782.80
  6. Step 6: Final answer
    x = 130,731,161.39

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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.