Home / 127,936.60-191,904.90-72,640.60

Finding the Fourth Proportional to 127,936.60, 191,904.90 and 72,640.60

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Solution

The fourth proportional to 127,936.60, 191,904.90 and 72,640.60 is: 108,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,936.60 : 191,904.90 = 72,640.60 : x
  2. Step 2: Convert to fraction form
    127,936.60/191,904.90 = 72,640.60/x
  3. Step 3: Cross multiply
    127,936.60x = 191,904.90 × 72,640.60
  4. Step 4: Simplify right side
    127,936.60x = 13,940,087,078.94
  5. Step 5: Solve for x
    x = 13,940,087,078.94/127,936.60
  6. Step 6: Final answer
    x = 108,960.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.