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Finding the Fourth Proportional to 119,628.39, 165,085.08 and 65,912.94

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Solution

The fourth proportional to 119,628.39, 165,085.08 and 65,912.94 is: 90,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,628.39 : 165,085.08 = 65,912.94 : x
  2. Step 2: Convert to fraction form
    119,628.39/165,085.08 = 65,912.94/x
  3. Step 3: Cross multiply
    119,628.39x = 165,085.08 × 65,912.94
  4. Step 4: Simplify right side
    119,628.39x = 10,881,242,972.94
  5. Step 5: Solve for x
    x = 10,881,242,972.94/119,628.39
  6. Step 6: Final answer
    x = 90,958.70

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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.