Home / 135,161.30-186,512.78-74,732.69

Finding the Fourth Proportional to 135,161.30, 186,512.78 and 74,732.69

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Solution

The fourth proportional to 135,161.30, 186,512.78 and 74,732.69 is: 103,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,161.30 : 186,512.78 = 74,732.69 : x
  2. Step 2: Convert to fraction form
    135,161.30/186,512.78 = 74,732.69/x
  3. Step 3: Cross multiply
    135,161.30x = 186,512.78 × 74,732.69
  4. Step 4: Simplify right side
    135,161.30x = 13,938,601,395.11
  5. Step 5: Solve for x
    x = 13,938,601,395.11/135,161.30
  6. Step 6: Final answer
    x = 103,125.68

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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.