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Finding the Fourth Proportional to 138,331.60, 207,205.80 and 138,331.60

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Solution

The fourth proportional to 138,331.60, 207,205.80 and 138,331.60 is: 207,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,331.60 : 207,205.80 = 138,331.60 : x
  2. Step 2: Convert to fraction form
    138,331.60/207,205.80 = 138,331.60/x
  3. Step 3: Cross multiply
    138,331.60x = 207,205.80 × 138,331.60
  4. Step 4: Simplify right side
    138,331.60x = 28,663,109,843.28
  5. Step 5: Solve for x
    x = 28,663,109,843.28/138,331.60
  6. Step 6: Final answer
    x = 207,205.80

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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.