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Finding the Fourth Proportional to 149,042.80, 223,782.90 and 89,993.80

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Solution

The fourth proportional to 149,042.80, 223,782.90 and 89,993.80 is: 135,122.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,042.80 : 223,782.90 = 89,993.80 : x
  2. Step 2: Convert to fraction form
    149,042.80/223,782.90 = 89,993.80/x
  3. Step 3: Cross multiply
    149,042.80x = 223,782.90 × 89,993.80
  4. Step 4: Simplify right side
    149,042.80x = 20,139,073,546.02
  5. Step 5: Solve for x
    x = 20,139,073,546.02/149,042.80
  6. Step 6: Final answer
    x = 135,122.75

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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.