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Finding the Fourth Proportional to 119,992.79, 165,581.72 and 66,277.34

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Solution

The fourth proportional to 119,992.79, 165,581.72 and 66,277.34 is: 91,458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,992.79 : 165,581.72 = 66,277.34 : x
  2. Step 2: Convert to fraction form
    119,992.79/165,581.72 = 66,277.34/x
  3. Step 3: Cross multiply
    119,992.79x = 165,581.72 × 66,277.34
  4. Step 4: Simplify right side
    119,992.79x = 10,974,315,664.40
  5. Step 5: Solve for x
    x = 10,974,315,664.40/119,992.79
  6. Step 6: Final answer
    x = 91,458.12

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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.