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Finding the Fourth Proportional to 200,545.67, 300,615.91 and 125,718.21

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Solution

The fourth proportional to 200,545.67, 300,615.91 and 125,718.21 is: 188,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,545.67 : 300,615.91 = 125,718.21 : x
  2. Step 2: Convert to fraction form
    200,545.67/300,615.91 = 125,718.21/x
  3. Step 3: Cross multiply
    200,545.67x = 300,615.91 × 125,718.21
  4. Step 4: Simplify right side
    200,545.67x = 37,792,893,788.43
  5. Step 5: Solve for x
    x = 37,792,893,788.43/200,545.67
  6. Step 6: Final answer
    x = 188,450.31

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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.