Home / 128,538.87-192,847.68-57,521.27

Finding the Fourth Proportional to 128,538.87, 192,847.68 and 57,521.27

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Solution

The fourth proportional to 128,538.87, 192,847.68 and 57,521.27 is: 86,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,538.87 : 192,847.68 = 57,521.27 : x
  2. Step 2: Convert to fraction form
    128,538.87/192,847.68 = 57,521.27/x
  3. Step 3: Cross multiply
    128,538.87x = 192,847.68 × 57,521.27
  4. Step 4: Simplify right side
    128,538.87x = 11,092,842,505.92
  5. Step 5: Solve for x
    x = 11,092,842,505.92/128,538.87
  6. Step 6: Final answer
    x = 86,299.52

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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.