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Finding the Fourth Proportional to 118,209.66, 177,081.21 and 88,660.86

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Solution

The fourth proportional to 118,209.66, 177,081.21 and 88,660.86 is: 132,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,209.66 : 177,081.21 = 88,660.86 : x
  2. Step 2: Convert to fraction form
    118,209.66/177,081.21 = 88,660.86/x
  3. Step 3: Cross multiply
    118,209.66x = 177,081.21 × 88,660.86
  4. Step 4: Simplify right side
    118,209.66x = 15,700,172,368.44
  5. Step 5: Solve for x
    x = 15,700,172,368.44/118,209.66
  6. Step 6: Final answer
    x = 132,816.32

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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.