Home / 143,990.49-215,971.14-38,820.09

Finding the Fourth Proportional to 143,990.49, 215,971.14 and 38,820.09

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Solution

The fourth proportional to 143,990.49, 215,971.14 and 38,820.09 is: 58,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,990.49 : 215,971.14 = 38,820.09 : x
  2. Step 2: Convert to fraction form
    143,990.49/215,971.14 = 38,820.09/x
  3. Step 3: Cross multiply
    143,990.49x = 215,971.14 × 38,820.09
  4. Step 4: Simplify right side
    143,990.49x = 8,384,019,092.20
  5. Step 5: Solve for x
    x = 8,384,019,092.20/143,990.49
  6. Step 6: Final answer
    x = 58,226.20

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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.