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Finding the Fourth Proportional to 118,920.20, 178,131.90 and 55,794.20

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Solution

The fourth proportional to 118,920.20, 178,131.90 and 55,794.20 is: 83,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,920.20 : 178,131.90 = 55,794.20 : x
  2. Step 2: Convert to fraction form
    118,920.20/178,131.90 = 55,794.20/x
  3. Step 3: Cross multiply
    118,920.20x = 178,131.90 × 55,794.20
  4. Step 4: Simplify right side
    118,920.20x = 9,938,726,854.98
  5. Step 5: Solve for x
    x = 9,938,726,854.98/118,920.20
  6. Step 6: Final answer
    x = 83,574.76

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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.