Home / 204,923.80-307,428.90-86,534.20

Finding the Fourth Proportional to 204,923.80, 307,428.90 and 86,534.20

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Solution

The fourth proportional to 204,923.80, 307,428.90 and 86,534.20 is: 129,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,923.80 : 307,428.90 = 86,534.20 : x
  2. Step 2: Convert to fraction form
    204,923.80/307,428.90 = 86,534.20/x
  3. Step 3: Cross multiply
    204,923.80x = 307,428.90 × 86,534.20
  4. Step 4: Simplify right side
    204,923.80x = 26,603,113,918.38
  5. Step 5: Solve for x
    x = 26,603,113,918.38/204,923.80
  6. Step 6: Final answer
    x = 129,819.54

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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.