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Finding the Fourth Proportional to 130,480.80, 195,727.60 and 68,272.80

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Solution

The fourth proportional to 130,480.80, 195,727.60 and 68,272.80 is: 102,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,480.80 : 195,727.60 = 68,272.80 : x
  2. Step 2: Convert to fraction form
    130,480.80/195,727.60 = 68,272.80/x
  3. Step 3: Cross multiply
    130,480.80x = 195,727.60 × 68,272.80
  4. Step 4: Simplify right side
    130,480.80x = 13,362,871,289.28
  5. Step 5: Solve for x
    x = 13,362,871,289.28/130,480.80
  6. Step 6: Final answer
    x = 102,412.55

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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.