Home / 204,712.11-307,163.28-78,310.58

Finding the Fourth Proportional to 204,712.11, 307,163.28 and 78,310.58

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Solution

The fourth proportional to 204,712.11, 307,163.28 and 78,310.58 is: 117,502.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,712.11 : 307,163.28 = 78,310.58 : x
  2. Step 2: Convert to fraction form
    204,712.11/307,163.28 = 78,310.58/x
  3. Step 3: Cross multiply
    204,712.11x = 307,163.28 × 78,310.58
  4. Step 4: Simplify right side
    204,712.11x = 24,054,133,075.69
  5. Step 5: Solve for x
    x = 24,054,133,075.69/204,712.11
  6. Step 6: Final answer
    x = 117,502.25

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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.