Home / 204,723.69-307,258.07-86,479.89

Finding the Fourth Proportional to 204,723.69, 307,258.07 and 86,479.89

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Solution

The fourth proportional to 204,723.69, 307,258.07 and 86,479.89 is: 129,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,723.69 : 307,258.07 = 86,479.89 : x
  2. Step 2: Convert to fraction form
    204,723.69/307,258.07 = 86,479.89/x
  3. Step 3: Cross multiply
    204,723.69x = 307,258.07 × 86,479.89
  4. Step 4: Simplify right side
    204,723.69x = 26,571,644,095.21
  5. Step 5: Solve for x
    x = 26,571,644,095.21/204,723.69
  6. Step 6: Final answer
    x = 129,792.72

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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.