Home / 119,936.09-165,512.50-66,221.28

Finding the Fourth Proportional to 119,936.09, 165,512.50 and 66,221.28

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Solution

The fourth proportional to 119,936.09, 165,512.50 and 66,221.28 is: 91,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,936.09 : 165,512.50 = 66,221.28 : x
  2. Step 2: Convert to fraction form
    119,936.09/165,512.50 = 66,221.28/x
  3. Step 3: Cross multiply
    119,936.09x = 165,512.50 × 66,221.28
  4. Step 4: Simplify right side
    119,936.09x = 10,960,449,440.45
  5. Step 5: Solve for x
    x = 10,960,449,440.45/119,936.09
  6. Step 6: Final answer
    x = 91,385.75

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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.