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Finding the Fourth Proportional to 118,717.38, 178,166.34 and 43,908.30

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Solution

The fourth proportional to 118,717.38, 178,166.34 and 43,908.30 is: 65,895.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,717.38 : 178,166.34 = 43,908.30 : x
  2. Step 2: Convert to fraction form
    118,717.38/178,166.34 = 43,908.30/x
  3. Step 3: Cross multiply
    118,717.38x = 178,166.34 × 43,908.30
  4. Step 4: Simplify right side
    118,717.38x = 7,822,981,106.62
  5. Step 5: Solve for x
    x = 7,822,981,106.62/118,717.38
  6. Step 6: Final answer
    x = 65,895.84

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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.