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Finding the Fourth Proportional to 128,548.13, 192,822.19 and 54,676.13

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Solution

The fourth proportional to 128,548.13, 192,822.19 and 54,676.13 is: 82,014.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,548.13 : 192,822.19 = 54,676.13 : x
  2. Step 2: Convert to fraction form
    128,548.13/192,822.19 = 54,676.13/x
  3. Step 3: Cross multiply
    128,548.13x = 192,822.19 × 54,676.13
  4. Step 4: Simplify right side
    128,548.13x = 10,542,770,026.52
  5. Step 5: Solve for x
    x = 10,542,770,026.52/128,548.13
  6. Step 6: Final answer
    x = 82,014.19

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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.