Home / 128,788.80-193,183.20-40,051.28

Finding the Fourth Proportional to 128,788.80, 193,183.20 and 40,051.28

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Solution

The fourth proportional to 128,788.80, 193,183.20 and 40,051.28 is: 60,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,788.80 : 193,183.20 = 40,051.28 : x
  2. Step 2: Convert to fraction form
    128,788.80/193,183.20 = 40,051.28/x
  3. Step 3: Cross multiply
    128,788.80x = 193,183.20 × 40,051.28
  4. Step 4: Simplify right side
    128,788.80x = 7,737,233,468.58
  5. Step 5: Solve for x
    x = 7,737,233,468.58/128,788.80
  6. Step 6: Final answer
    x = 60,076.91

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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.