Home / 143,478.20-215,217.30-43,637.60

Finding the Fourth Proportional to 143,478.20, 215,217.30 and 43,637.60

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Solution

The fourth proportional to 143,478.20, 215,217.30 and 43,637.60 is: 65,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,478.20 : 215,217.30 = 43,637.60 : x
  2. Step 2: Convert to fraction form
    143,478.20/215,217.30 = 43,637.60/x
  3. Step 3: Cross multiply
    143,478.20x = 215,217.30 × 43,637.60
  4. Step 4: Simplify right side
    143,478.20x = 9,391,566,450.48
  5. Step 5: Solve for x
    x = 9,391,566,450.48/143,478.20
  6. Step 6: Final answer
    x = 65,456.40

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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.