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Finding the Fourth Proportional to 171,398.31, 236,501.55 and 107,691

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Solution

The fourth proportional to 171,398.31, 236,501.55 and 107,691 is: 148,595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,398.31 : 236,501.55 = 107,691 : x
  2. Step 2: Convert to fraction form
    171,398.31/236,501.55 = 107,691/x
  3. Step 3: Cross multiply
    171,398.31x = 236,501.55 × 107,691
  4. Step 4: Simplify right side
    171,398.31x = 25,469,088,421.05
  5. Step 5: Solve for x
    x = 25,469,088,421.05/171,398.31
  6. Step 6: Final answer
    x = 148,595.91

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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.