Home / 135,311.35-186,725.05-74,884.54

Finding the Fourth Proportional to 135,311.35, 186,725.05 and 74,884.54

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Solution

The fourth proportional to 135,311.35, 186,725.05 and 74,884.54 is: 103,338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,311.35 : 186,725.05 = 74,884.54 : x
  2. Step 2: Convert to fraction form
    135,311.35/186,725.05 = 74,884.54/x
  3. Step 3: Cross multiply
    135,311.35x = 186,725.05 × 74,884.54
  4. Step 4: Simplify right side
    135,311.35x = 13,982,819,475.73
  5. Step 5: Solve for x
    x = 13,982,819,475.73/135,311.35
  6. Step 6: Final answer
    x = 103,338.11

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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.