Home / 128,306.94-192,448.04-39,536.61

Finding the Fourth Proportional to 128,306.94, 192,448.04 and 39,536.61

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Solution

The fourth proportional to 128,306.94, 192,448.04 and 39,536.61 is: 59,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,306.94 : 192,448.04 = 39,536.61 : x
  2. Step 2: Convert to fraction form
    128,306.94/192,448.04 = 39,536.61/x
  3. Step 3: Cross multiply
    128,306.94x = 192,448.04 × 39,536.61
  4. Step 4: Simplify right side
    128,306.94x = 7,608,742,183.38
  5. Step 5: Solve for x
    x = 7,608,742,183.38/128,306.94
  6. Step 6: Final answer
    x = 59,301.10

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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.