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Finding the Fourth Proportional to 119,310.39, 178,965.59 and 49,187.88

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Solution

The fourth proportional to 119,310.39, 178,965.59 and 49,187.88 is: 73,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,310.39 : 178,965.59 = 49,187.88 : x
  2. Step 2: Convert to fraction form
    119,310.39/178,965.59 = 49,187.88/x
  3. Step 3: Cross multiply
    119,310.39x = 178,965.59 × 49,187.88
  4. Step 4: Simplify right side
    119,310.39x = 8,802,937,719.11
  5. Step 5: Solve for x
    x = 8,802,937,719.11/119,310.39
  6. Step 6: Final answer
    x = 73,781.82

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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.