Home / 115,383.18-159,243.39-66,974.76

Finding the Fourth Proportional to 115,383.18, 159,243.39 and 66,974.76

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Solution

The fourth proportional to 115,383.18, 159,243.39 and 66,974.76 is: 92,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,383.18 : 159,243.39 = 66,974.76 : x
  2. Step 2: Convert to fraction form
    115,383.18/159,243.39 = 66,974.76/x
  3. Step 3: Cross multiply
    115,383.18x = 159,243.39 × 66,974.76
  4. Step 4: Simplify right side
    115,383.18x = 10,665,287,826.84
  5. Step 5: Solve for x
    x = 10,665,287,826.84/115,383.18
  6. Step 6: Final answer
    x = 92,433.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.