Home / 92,460.20-138,021.26-81,250.02

Finding the Fourth Proportional to 92,460.20, 138,021.26 and 81,250.02

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Solution

The fourth proportional to 92,460.20, 138,021.26 and 81,250.02 is: 121,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,460.20 : 138,021.26 = 81,250.02 : x
  2. Step 2: Convert to fraction form
    92,460.20/138,021.26 = 81,250.02/x
  3. Step 3: Cross multiply
    92,460.20x = 138,021.26 × 81,250.02
  4. Step 4: Simplify right side
    92,460.20x = 11,214,229,729.18
  5. Step 5: Solve for x
    x = 11,214,229,729.18/92,460.20
  6. Step 6: Final answer
    x = 121,287.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.