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Finding the Fourth Proportional to 138,049.50, 207,078.84 and 38,201.34

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Solution

The fourth proportional to 138,049.50, 207,078.84 and 38,201.34 is: 57,303.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,049.50 : 207,078.84 = 38,201.34 : x
  2. Step 2: Convert to fraction form
    138,049.50/207,078.84 = 38,201.34/x
  3. Step 3: Cross multiply
    138,049.50x = 207,078.84 × 38,201.34
  4. Step 4: Simplify right side
    138,049.50x = 7,910,689,173.65
  5. Step 5: Solve for x
    x = 7,910,689,173.65/138,049.50
  6. Step 6: Final answer
    x = 57,303.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.