Home / 127,936.80-191,919.60-39,189.60

Finding the Fourth Proportional to 127,936.80, 191,919.60 and 39,189.60

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Solution

The fourth proportional to 127,936.80, 191,919.60 and 39,189.60 is: 58,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,936.80 : 191,919.60 = 39,189.60 : x
  2. Step 2: Convert to fraction form
    127,936.80/191,919.60 = 39,189.60/x
  3. Step 3: Cross multiply
    127,936.80x = 191,919.60 × 39,189.60
  4. Step 4: Simplify right side
    127,936.80x = 7,521,252,356.16
  5. Step 5: Solve for x
    x = 7,521,252,356.16/127,936.80
  6. Step 6: Final answer
    x = 58,788.81

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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.