Home / 135,045.28-186,371.24-74,615.91

Finding the Fourth Proportional to 135,045.28, 186,371.24 and 74,615.91

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Solution

The fourth proportional to 135,045.28, 186,371.24 and 74,615.91 is: 102,974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,045.28 : 186,371.24 = 74,615.91 : x
  2. Step 2: Convert to fraction form
    135,045.28/186,371.24 = 74,615.91/x
  3. Step 3: Cross multiply
    135,045.28x = 186,371.24 × 74,615.91
  4. Step 4: Simplify right side
    135,045.28x = 13,906,259,670.43
  5. Step 5: Solve for x
    x = 13,906,259,670.43/135,045.28
  6. Step 6: Final answer
    x = 102,974.79

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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.