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Finding the Fourth Proportional to 136,494.39, 188,359.71 and 76,063.71

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Solution

The fourth proportional to 136,494.39, 188,359.71 and 76,063.71 is: 104,966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,494.39 : 188,359.71 = 76,063.71 : x
  2. Step 2: Convert to fraction form
    136,494.39/188,359.71 = 76,063.71/x
  3. Step 3: Cross multiply
    136,494.39x = 188,359.71 × 76,063.71
  4. Step 4: Simplify right side
    136,494.39x = 14,327,338,357.12
  5. Step 5: Solve for x
    x = 14,327,338,357.12/136,494.39
  6. Step 6: Final answer
    x = 104,966.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.