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Finding the Fourth Proportional to 161,201.60, 241,996.80 and 90,180.80

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Solution

The fourth proportional to 161,201.60, 241,996.80 and 90,180.80 is: 135,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,201.60 : 241,996.80 = 90,180.80 : x
  2. Step 2: Convert to fraction form
    161,201.60/241,996.80 = 90,180.80/x
  3. Step 3: Cross multiply
    161,201.60x = 241,996.80 × 90,180.80
  4. Step 4: Simplify right side
    161,201.60x = 21,823,465,021.44
  5. Step 5: Solve for x
    x = 21,823,465,021.44/161,201.60
  6. Step 6: Final answer
    x = 135,379.95

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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.