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Finding the Fourth Proportional to 128,327.28, 192,494.28 and 60,843.48

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Solution

The fourth proportional to 128,327.28, 192,494.28 and 60,843.48 is: 91,266.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,327.28 : 192,494.28 = 60,843.48 : x
  2. Step 2: Convert to fraction form
    128,327.28/192,494.28 = 60,843.48/x
  3. Step 3: Cross multiply
    128,327.28x = 192,494.28 × 60,843.48
  4. Step 4: Simplify right side
    128,327.28x = 11,712,021,875.29
  5. Step 5: Solve for x
    x = 11,712,021,875.29/128,327.28
  6. Step 6: Final answer
    x = 91,266.81

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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.