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Finding the Fourth Proportional to 137,919.66, 206,879.13 and 36,717.72

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Solution

The fourth proportional to 137,919.66, 206,879.13 and 36,717.72 is: 55,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,919.66 : 206,879.13 = 36,717.72 : x
  2. Step 2: Convert to fraction form
    137,919.66/206,879.13 = 36,717.72/x
  3. Step 3: Cross multiply
    137,919.66x = 206,879.13 × 36,717.72
  4. Step 4: Simplify right side
    137,919.66x = 7,596,130,106.88
  5. Step 5: Solve for x
    x = 7,596,130,106.88/137,919.66
  6. Step 6: Final answer
    x = 55,076.48

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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.