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Finding the Fourth Proportional to 172,873.39, 238,512.33 and 100,261.57

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Solution

The fourth proportional to 172,873.39, 238,512.33 and 100,261.57 is: 138,330.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,873.39 : 238,512.33 = 100,261.57 : x
  2. Step 2: Convert to fraction form
    172,873.39/238,512.33 = 100,261.57/x
  3. Step 3: Cross multiply
    172,873.39x = 238,512.33 × 100,261.57
  4. Step 4: Simplify right side
    172,873.39x = 23,913,620,670.16
  5. Step 5: Solve for x
    x = 23,913,620,670.16/172,873.39
  6. Step 6: Final answer
    x = 138,330.26

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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.