Home / 128,069.44-192,132.72-39,331.90

Finding the Fourth Proportional to 128,069.44, 192,132.72 and 39,331.90

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Solution

The fourth proportional to 128,069.44, 192,132.72 and 39,331.90 is: 59,006.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,069.44 : 192,132.72 = 39,331.90 : x
  2. Step 2: Convert to fraction form
    128,069.44/192,132.72 = 39,331.90/x
  3. Step 3: Cross multiply
    128,069.44x = 192,132.72 × 39,331.90
  4. Step 4: Simplify right side
    128,069.44x = 7,556,944,929.77
  5. Step 5: Solve for x
    x = 7,556,944,929.77/128,069.44
  6. Step 6: Final answer
    x = 59,006.62

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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.