Home / 92,272.20-138,321.90-72,270.60

Finding the Fourth Proportional to 92,272.20, 138,321.90 and 72,270.60

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Solution

The fourth proportional to 92,272.20, 138,321.90 and 72,270.60 is: 108,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,272.20 : 138,321.90 = 72,270.60 : x
  2. Step 2: Convert to fraction form
    92,272.20/138,321.90 = 72,270.60/x
  3. Step 3: Cross multiply
    92,272.20x = 138,321.90 × 72,270.60
  4. Step 4: Simplify right side
    92,272.20x = 9,996,606,706.14
  5. Step 5: Solve for x
    x = 9,996,606,706.14/92,272.20
  6. Step 6: Final answer
    x = 108,338.23

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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.