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Finding the Fourth Proportional to 118,973.36, 178,109.43 and 104,211.11

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Solution

The fourth proportional to 118,973.36, 178,109.43 and 104,211.11 is: 156,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.36 : 178,109.43 = 104,211.11 : x
  2. Step 2: Convert to fraction form
    118,973.36/178,109.43 = 104,211.11/x
  3. Step 3: Cross multiply
    118,973.36x = 178,109.43 × 104,211.11
  4. Step 4: Simplify right side
    118,973.36x = 18,560,981,040.57
  5. Step 5: Solve for x
    x = 18,560,981,040.57/118,973.36
  6. Step 6: Final answer
    x = 156,009.56

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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.