Home / 204,931.69-307,186.39-78,542.53

Finding the Fourth Proportional to 204,931.69, 307,186.39 and 78,542.53

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Solution

The fourth proportional to 204,931.69, 307,186.39 and 78,542.53 is: 117,732.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,931.69 : 307,186.39 = 78,542.53 : x
  2. Step 2: Convert to fraction form
    204,931.69/307,186.39 = 78,542.53/x
  3. Step 3: Cross multiply
    204,931.69x = 307,186.39 × 78,542.53
  4. Step 4: Simplify right side
    204,931.69x = 24,127,195,582.38
  5. Step 5: Solve for x
    x = 24,127,195,582.38/204,931.69
  6. Step 6: Final answer
    x = 117,732.87

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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.