Home / 128,632.52-192,994.14-39,908.36

Finding the Fourth Proportional to 128,632.52, 192,994.14 and 39,908.36

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Solution

The fourth proportional to 128,632.52, 192,994.14 and 39,908.36 is: 59,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,632.52 : 192,994.14 = 39,908.36 : x
  2. Step 2: Convert to fraction form
    128,632.52/192,994.14 = 39,908.36/x
  3. Step 3: Cross multiply
    128,632.52x = 192,994.14 × 39,908.36
  4. Step 4: Simplify right side
    128,632.52x = 7,702,079,617.01
  5. Step 5: Solve for x
    x = 7,702,079,617.01/128,632.52
  6. Step 6: Final answer
    x = 59,876.61

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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.