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Finding the Fourth Proportional to 128,773.20, 193,006.20 and 53,893.20

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Solution

The fourth proportional to 128,773.20, 193,006.20 and 53,893.20 is: 80,775.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,773.20 : 193,006.20 = 53,893.20 : x
  2. Step 2: Convert to fraction form
    128,773.20/193,006.20 = 53,893.20/x
  3. Step 3: Cross multiply
    128,773.20x = 193,006.20 × 53,893.20
  4. Step 4: Simplify right side
    128,773.20x = 10,401,721,737.84
  5. Step 5: Solve for x
    x = 10,401,721,737.84/128,773.20
  6. Step 6: Final answer
    x = 80,775.52

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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.