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Finding the Fourth Proportional to 118,138.80, 177,208.20 and 55,930.80

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Solution

The fourth proportional to 118,138.80, 177,208.20 and 55,930.80 is: 83,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.80 : 177,208.20 = 55,930.80 : x
  2. Step 2: Convert to fraction form
    118,138.80/177,208.20 = 55,930.80/x
  3. Step 3: Cross multiply
    118,138.80x = 177,208.20 × 55,930.80
  4. Step 4: Simplify right side
    118,138.80x = 9,911,396,392.56
  5. Step 5: Solve for x
    x = 9,911,396,392.56/118,138.80
  6. Step 6: Final answer
    x = 83,896.20

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1.5x scale

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.