Home / 89,815,100.40-134,722,650.60-86,287,906.80

Finding the Fourth Proportional to 89,815,100.40, 134,722,650.60 and 86,287,906.80

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Solution

The fourth proportional to 89,815,100.40, 134,722,650.60 and 86,287,906.80 is: 129,431,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,815,100.40 : 134,722,650.60 = 86,287,906.80 : x
  2. Step 2: Convert to fraction form
    89,815,100.40/134,722,650.60 = 86,287,906.80/x
  3. Step 3: Cross multiply
    89,815,100.40x = 134,722,650.60 × 86,287,906.80
  4. Step 4: Simplify right side
    89,815,100.40x = 11,624,935,518,821,764
  5. Step 5: Solve for x
    x = 11,624,935,518,821,764/89,815,100.40
  6. Step 6: Final answer
    x = 129,431,860.20

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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.