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Finding the Fourth Proportional to 201,859.91, 278,545.79 and 124,323.20

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Solution

The fourth proportional to 201,859.91, 278,545.79 and 124,323.20 is: 171,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,859.91 : 278,545.79 = 124,323.20 : x
  2. Step 2: Convert to fraction form
    201,859.91/278,545.79 = 124,323.20/x
  3. Step 3: Cross multiply
    201,859.91x = 278,545.79 × 124,323.20
  4. Step 4: Simplify right side
    201,859.91x = 34,629,702,877.41
  5. Step 5: Solve for x
    x = 34,629,702,877.41/201,859.91
  6. Step 6: Final answer
    x = 171,553.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.