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Finding the Fourth Proportional to 133,279.80, 199,954.32 and 39,785.52

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Solution

The fourth proportional to 133,279.80, 199,954.32 and 39,785.52 is: 59,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,279.80 : 199,954.32 = 39,785.52 : x
  2. Step 2: Convert to fraction form
    133,279.80/199,954.32 = 39,785.52/x
  3. Step 3: Cross multiply
    133,279.80x = 199,954.32 × 39,785.52
  4. Step 4: Simplify right side
    133,279.80x = 7,955,286,597.45
  5. Step 5: Solve for x
    x = 7,955,286,597.45/133,279.80
  6. Step 6: Final answer
    x = 59,688.61

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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.