Home / 128,115.48-192,069.34-53,291.60

Finding the Fourth Proportional to 128,115.48, 192,069.34 and 53,291.60

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Solution

The fourth proportional to 128,115.48, 192,069.34 and 53,291.60 is: 79,894.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.48 : 192,069.34 = 53,291.60 : x
  2. Step 2: Convert to fraction form
    128,115.48/192,069.34 = 53,291.60/x
  3. Step 3: Cross multiply
    128,115.48x = 192,069.34 × 53,291.60
  4. Step 4: Simplify right side
    128,115.48x = 10,235,682,439.54
  5. Step 5: Solve for x
    x = 10,235,682,439.54/128,115.48
  6. Step 6: Final answer
    x = 79,894.19

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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.