Home / 89,815,040.40-134,722,560.60-86,287,846.80

Finding the Fourth Proportional to 89,815,040.40, 134,722,560.60 and 86,287,846.80

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Solution

The fourth proportional to 89,815,040.40, 134,722,560.60 and 86,287,846.80 is: 129,431,770.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,815,040.40 : 134,722,560.60 = 86,287,846.80 : x
  2. Step 2: Convert to fraction form
    89,815,040.40/134,722,560.60 = 86,287,846.80/x
  3. Step 3: Cross multiply
    89,815,040.40x = 134,722,560.60 × 86,287,846.80
  4. Step 4: Simplify right side
    89,815,040.40x = 11,624,919,669,556,516
  5. Step 5: Solve for x
    x = 11,624,919,669,556,516/89,815,040.40
  6. Step 6: Final answer
    x = 129,431,770.20

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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.