Home / 91,867,740.10-137,801,610.15-81,823,505.20

Finding the Fourth Proportional to 91,867,740.10, 137,801,610.15 and 81,823,505.20

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Solution

The fourth proportional to 91,867,740.10, 137,801,610.15 and 81,823,505.20 is: 122,735,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,867,740.10 : 137,801,610.15 = 81,823,505.20 : x
  2. Step 2: Convert to fraction form
    91,867,740.10/137,801,610.15 = 81,823,505.20/x
  3. Step 3: Cross multiply
    91,867,740.10x = 137,801,610.15 × 81,823,505.20
  4. Step 4: Simplify right side
    91,867,740.10x = 11,275,410,764,676,898
  5. Step 5: Solve for x
    x = 11,275,410,764,676,898/91,867,740.10
  6. Step 6: Final answer
    x = 122,735,257.80

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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.