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Finding the Fourth Proportional to 172,291.21, 237,727.02 and 100,657.39

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Solution

The fourth proportional to 172,291.21, 237,727.02 and 100,657.39 is: 138,886.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,291.21 : 237,727.02 = 100,657.39 : x
  2. Step 2: Convert to fraction form
    172,291.21/237,727.02 = 100,657.39/x
  3. Step 3: Cross multiply
    172,291.21x = 237,727.02 × 100,657.39
  4. Step 4: Simplify right side
    172,291.21x = 23,928,981,657.72
  5. Step 5: Solve for x
    x = 23,928,981,657.72/172,291.21
  6. Step 6: Final answer
    x = 138,886.84

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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.