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Finding the Fourth Proportional to 208,195.92, 287,299.51 and 122,142.94

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Solution

The fourth proportional to 208,195.92, 287,299.51 and 122,142.94 is: 168,550.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,195.92 : 287,299.51 = 122,142.94 : x
  2. Step 2: Convert to fraction form
    208,195.92/287,299.51 = 122,142.94/x
  3. Step 3: Cross multiply
    208,195.92x = 287,299.51 × 122,142.94
  4. Step 4: Simplify right side
    208,195.92x = 35,091,605,788.35
  5. Step 5: Solve for x
    x = 35,091,605,788.35/208,195.92
  6. Step 6: Final answer
    x = 168,550.88

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1.5x scale

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.