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Finding the Fourth Proportional to 138,418.60, 207,336.30 and 138,418.60

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Solution

The fourth proportional to 138,418.60, 207,336.30 and 138,418.60 is: 207,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,418.60 : 207,336.30 = 138,418.60 : x
  2. Step 2: Convert to fraction form
    138,418.60/207,336.30 = 138,418.60/x
  3. Step 3: Cross multiply
    138,418.60x = 207,336.30 × 138,418.60
  4. Step 4: Simplify right side
    138,418.60x = 28,699,200,375.18
  5. Step 5: Solve for x
    x = 28,699,200,375.18/138,418.60
  6. Step 6: Final answer
    x = 207,336.30

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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.