Home / 204,999.30-307,556.55-99,821.70

Finding the Fourth Proportional to 204,999.30, 307,556.55 and 99,821.70

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Solution

The fourth proportional to 204,999.30, 307,556.55 and 99,821.70 is: 149,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,999.30 : 307,556.55 = 99,821.70 : x
  2. Step 2: Convert to fraction form
    204,999.30/307,556.55 = 99,821.70/x
  3. Step 3: Cross multiply
    204,999.30x = 307,556.55 × 99,821.70
  4. Step 4: Simplify right side
    204,999.30x = 30,700,817,667.14
  5. Step 5: Solve for x
    x = 30,700,817,667.14/204,999.30
  6. Step 6: Final answer
    x = 149,760.60

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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.