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Finding the Fourth Proportional to 129,036.80, 193,516.80 and 50,105.60

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Solution

The fourth proportional to 129,036.80, 193,516.80 and 50,105.60 is: 75,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,036.80 : 193,516.80 = 50,105.60 : x
  2. Step 2: Convert to fraction form
    129,036.80/193,516.80 = 50,105.60/x
  3. Step 3: Cross multiply
    129,036.80x = 193,516.80 × 50,105.60
  4. Step 4: Simplify right side
    129,036.80x = 9,696,275,374.08
  5. Step 5: Solve for x
    x = 9,696,275,374.08/129,036.80
  6. Step 6: Final answer
    x = 75,143.49

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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.