Home / 91,620.62-137,273.14-71,622.33

Finding the Fourth Proportional to 91,620.62, 137,273.14 and 71,622.33

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Solution

The fourth proportional to 91,620.62, 137,273.14 and 71,622.33 is: 107,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,620.62 : 137,273.14 = 71,622.33 : x
  2. Step 2: Convert to fraction form
    91,620.62/137,273.14 = 71,622.33/x
  3. Step 3: Cross multiply
    91,620.62x = 137,273.14 × 71,622.33
  4. Step 4: Simplify right side
    91,620.62x = 9,831,822,133.22
  5. Step 5: Solve for x
    x = 9,831,822,133.22/91,620.62
  6. Step 6: Final answer
    x = 107,310.15

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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.