Home / 92,018.20-137,940.90-72,016.60

Finding the Fourth Proportional to 92,018.20, 137,940.90 and 72,016.60

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Solution

The fourth proportional to 92,018.20, 137,940.90 and 72,016.60 is: 107,957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,018.20 : 137,940.90 = 72,016.60 : x
  2. Step 2: Convert to fraction form
    92,018.20/137,940.90 = 72,016.60/x
  3. Step 3: Cross multiply
    92,018.20x = 137,940.90 × 72,016.60
  4. Step 4: Simplify right side
    92,018.20x = 9,934,034,618.94
  5. Step 5: Solve for x
    x = 9,934,034,618.94/92,018.20
  6. Step 6: Final answer
    x = 107,957.28

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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.