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Finding the Fourth Proportional to 149,057.20, 223,585.80 and 90,008.20

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Solution

The fourth proportional to 149,057.20, 223,585.80 and 90,008.20 is: 135,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,057.20 : 223,585.80 = 90,008.20 : x
  2. Step 2: Convert to fraction form
    149,057.20/223,585.80 = 90,008.20/x
  3. Step 3: Cross multiply
    149,057.20x = 223,585.80 × 90,008.20
  4. Step 4: Simplify right side
    149,057.20x = 20,124,555,403.56
  5. Step 5: Solve for x
    x = 20,124,555,403.56/149,057.20
  6. Step 6: Final answer
    x = 135,012.30

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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.