Home / 204,870.55-307,324.05-78,505.69

Finding the Fourth Proportional to 204,870.55, 307,324.05 and 78,505.69

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Solution

The fourth proportional to 204,870.55, 307,324.05 and 78,505.69 is: 117,765.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,870.55 : 307,324.05 = 78,505.69 : x
  2. Step 2: Convert to fraction form
    204,870.55/307,324.05 = 78,505.69/x
  3. Step 3: Cross multiply
    204,870.55x = 307,324.05 × 78,505.69
  4. Step 4: Simplify right side
    204,870.55x = 24,126,686,598.84
  5. Step 5: Solve for x
    x = 24,126,686,598.84/204,870.55
  6. Step 6: Final answer
    x = 117,765.52

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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.