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Finding the Fourth Proportional to 137,908.90, 206,911.95 and 133,048.90

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Solution

The fourth proportional to 137,908.90, 206,911.95 and 133,048.90 is: 199,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,908.90 : 206,911.95 = 133,048.90 : x
  2. Step 2: Convert to fraction form
    137,908.90/206,911.95 = 133,048.90/x
  3. Step 3: Cross multiply
    137,908.90x = 206,911.95 × 133,048.90
  4. Step 4: Simplify right side
    137,908.90x = 27,529,407,344.36
  5. Step 5: Solve for x
    x = 27,529,407,344.36/137,908.90
  6. Step 6: Final answer
    x = 199,620.24

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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.