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Finding the Fourth Proportional to 168,308.78, 231,988.82 and 119,187.41

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Solution

The fourth proportional to 168,308.78, 231,988.82 and 119,187.41 is: 164,282.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,308.78 : 231,988.82 = 119,187.41 : x
  2. Step 2: Convert to fraction form
    168,308.78/231,988.82 = 119,187.41/x
  3. Step 3: Cross multiply
    168,308.78x = 231,988.82 × 119,187.41
  4. Step 4: Simplify right side
    168,308.78x = 27,650,144,848.88
  5. Step 5: Solve for x
    x = 27,650,144,848.88/168,308.78
  6. Step 6: Final answer
    x = 164,282.25

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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.