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Finding the Fourth Proportional to 137,716.60, 207,012.30 and 129,843.40

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Solution

The fourth proportional to 137,716.60, 207,012.30 and 129,843.40 is: 195,177.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,716.60 : 207,012.30 = 129,843.40 : x
  2. Step 2: Convert to fraction form
    137,716.60/207,012.30 = 129,843.40/x
  3. Step 3: Cross multiply
    137,716.60x = 207,012.30 × 129,843.40
  4. Step 4: Simplify right side
    137,716.60x = 26,879,180,873.82
  5. Step 5: Solve for x
    x = 26,879,180,873.82/137,716.60
  6. Step 6: Final answer
    x = 195,177.49

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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.