Home / 138,604.08-207,884.52-45,109.20

Finding the Fourth Proportional to 138,604.08, 207,884.52 and 45,109.20

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Solution

The fourth proportional to 138,604.08, 207,884.52 and 45,109.20 is: 67,656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,604.08 : 207,884.52 = 45,109.20 : x
  2. Step 2: Convert to fraction form
    138,604.08/207,884.52 = 45,109.20/x
  3. Step 3: Cross multiply
    138,604.08x = 207,884.52 × 45,109.20
  4. Step 4: Simplify right side
    138,604.08x = 9,377,504,389.58
  5. Step 5: Solve for x
    x = 9,377,504,389.58/138,604.08
  6. Step 6: Final answer
    x = 67,656.77

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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.