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Finding the Fourth Proportional to 149,020.80, 223,454.40 and 55,478.40

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Solution

The fourth proportional to 149,020.80, 223,454.40 and 55,478.40 is: 83,189.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,020.80 : 223,454.40 = 55,478.40 : x
  2. Step 2: Convert to fraction form
    149,020.80/223,454.40 = 55,478.40/x
  3. Step 3: Cross multiply
    149,020.80x = 223,454.40 × 55,478.40
  4. Step 4: Simplify right side
    149,020.80x = 12,396,892,584.96
  5. Step 5: Solve for x
    x = 12,396,892,584.96/149,020.80
  6. Step 6: Final answer
    x = 83,189.01

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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.