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Finding the Fourth Proportional to 118,665.70, 177,998.55 and 100,003.30

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Solution

The fourth proportional to 118,665.70, 177,998.55 and 100,003.30 is: 150,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,665.70 : 177,998.55 = 100,003.30 : x
  2. Step 2: Convert to fraction form
    118,665.70/177,998.55 = 100,003.30/x
  3. Step 3: Cross multiply
    118,665.70x = 177,998.55 × 100,003.30
  4. Step 4: Simplify right side
    118,665.70x = 17,800,442,395.22
  5. Step 5: Solve for x
    x = 17,800,442,395.22/118,665.70
  6. Step 6: Final answer
    x = 150,004.95

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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.