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Finding the Fourth Proportional to 119,906.72, 165,495.45 and 68,955.08

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Solution

The fourth proportional to 119,906.72, 165,495.45 and 68,955.08 is: 95,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,906.72 : 165,495.45 = 68,955.08 : x
  2. Step 2: Convert to fraction form
    119,906.72/165,495.45 = 68,955.08/x
  3. Step 3: Cross multiply
    119,906.72x = 165,495.45 × 68,955.08
  4. Step 4: Simplify right side
    119,906.72x = 11,411,751,994.39
  5. Step 5: Solve for x
    x = 11,411,751,994.39/119,906.72
  6. Step 6: Final answer
    x = 95,171.91

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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.