Home / 81,279.18-121,938.24-41,198.22

Finding the Fourth Proportional to 81,279.18, 121,938.24 and 41,198.22

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Solution

The fourth proportional to 81,279.18, 121,938.24 and 41,198.22 is: 61,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.18 : 121,938.24 = 41,198.22 : x
  2. Step 2: Convert to fraction form
    81,279.18/121,938.24 = 41,198.22/x
  3. Step 3: Cross multiply
    81,279.18x = 121,938.24 × 41,198.22
  4. Step 4: Simplify right side
    81,279.18x = 5,023,638,437.93
  5. Step 5: Solve for x
    x = 5,023,638,437.93/81,279.18
  6. Step 6: Final answer
    x = 61,807.20

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1.5x scale

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.