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Finding the Fourth Proportional to 119,628.61, 165,086.67 and 65,912.38

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Solution

The fourth proportional to 119,628.61, 165,086.67 and 65,912.38 is: 90,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,628.61 : 165,086.67 = 65,912.38 : x
  2. Step 2: Convert to fraction form
    119,628.61/165,086.67 = 65,912.38/x
  3. Step 3: Cross multiply
    119,628.61x = 165,086.67 × 65,912.38
  4. Step 4: Simplify right side
    119,628.61x = 10,881,255,325.97
  5. Step 5: Solve for x
    x = 10,881,255,325.97/119,628.61
  6. Step 6: Final answer
    x = 90,958.64

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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.