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Finding the Fourth Proportional to 135,481.78, 186,962.38 and 75,052.23

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Solution

The fourth proportional to 135,481.78, 186,962.38 and 75,052.23 is: 103,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,481.78 : 186,962.38 = 75,052.23 : x
  2. Step 2: Convert to fraction form
    135,481.78/186,962.38 = 75,052.23/x
  3. Step 3: Cross multiply
    135,481.78x = 186,962.38 × 75,052.23
  4. Step 4: Simplify right side
    135,481.78x = 14,031,943,545.11
  5. Step 5: Solve for x
    x = 14,031,943,545.11/135,481.78
  6. Step 6: Final answer
    x = 103,570.71

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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.