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Finding the Fourth Proportional to 118,661.05, 177,894.01 and 55,449.91

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Solution

The fourth proportional to 118,661.05, 177,894.01 and 55,449.91 is: 83,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,661.05 : 177,894.01 = 55,449.91 : x
  2. Step 2: Convert to fraction form
    118,661.05/177,894.01 = 55,449.91/x
  3. Step 3: Cross multiply
    118,661.05x = 177,894.01 × 55,449.91
  4. Step 4: Simplify right side
    118,661.05x = 9,864,206,844.04
  5. Step 5: Solve for x
    x = 9,864,206,844.04/118,661.05
  6. Step 6: Final answer
    x = 83,129.27

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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.