Home / 138,630.08-207,923.43-45,135.20

Finding the Fourth Proportional to 138,630.08, 207,923.43 and 45,135.20

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Solution

The fourth proportional to 138,630.08, 207,923.43 and 45,135.20 is: 67,695.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,630.08 : 207,923.43 = 45,135.20 : x
  2. Step 2: Convert to fraction form
    138,630.08/207,923.43 = 45,135.20/x
  3. Step 3: Cross multiply
    138,630.08x = 207,923.43 × 45,135.20
  4. Step 4: Simplify right side
    138,630.08x = 9,384,665,597.74
  5. Step 5: Solve for x
    x = 9,384,665,597.74/138,630.08
  6. Step 6: Final answer
    x = 67,695.74

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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.