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Finding the Fourth Proportional to 138,833.66, 208,224.07 and 67,684.88

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Solution

The fourth proportional to 138,833.66, 208,224.07 and 67,684.88 is: 101,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,833.66 : 208,224.07 = 67,684.88 : x
  2. Step 2: Convert to fraction form
    138,833.66/208,224.07 = 67,684.88/x
  3. Step 3: Cross multiply
    138,833.66x = 208,224.07 × 67,684.88
  4. Step 4: Simplify right side
    138,833.66x = 14,093,621,542.41
  5. Step 5: Solve for x
    x = 14,093,621,542.41/138,833.66
  6. Step 6: Final answer
    x = 101,514.44

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1.5x scale

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.