Home / 127,991.24-191,986.80-68,745.40

Finding the Fourth Proportional to 127,991.24, 191,986.80 and 68,745.40

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Solution

The fourth proportional to 127,991.24, 191,986.80 and 68,745.40 is: 103,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,991.24 : 191,986.80 = 68,745.40 : x
  2. Step 2: Convert to fraction form
    127,991.24/191,986.80 = 68,745.40/x
  3. Step 3: Cross multiply
    127,991.24x = 191,986.80 × 68,745.40
  4. Step 4: Simplify right side
    127,991.24x = 13,198,209,360.72
  5. Step 5: Solve for x
    x = 13,198,209,360.72/127,991.24
  6. Step 6: Final answer
    x = 103,118.07

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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.