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Finding the Fourth Proportional to 118,976.80, 178,114.56 and 104,214.55

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Solution

The fourth proportional to 118,976.80, 178,114.56 and 104,214.55 is: 156,014.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,976.80 : 178,114.56 = 104,214.55 : x
  2. Step 2: Convert to fraction form
    118,976.80/178,114.56 = 104,214.55/x
  3. Step 3: Cross multiply
    118,976.80x = 178,114.56 × 104,214.55
  4. Step 4: Simplify right side
    118,976.80x = 18,562,128,718.85
  5. Step 5: Solve for x
    x = 18,562,128,718.85/118,976.80
  6. Step 6: Final answer
    x = 156,014.69

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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.