Home / 128,664.36-192,989.22-38,705.16

Finding the Fourth Proportional to 128,664.36, 192,989.22 and 38,705.16

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Solution

The fourth proportional to 128,664.36, 192,989.22 and 38,705.16 is: 58,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,664.36 : 192,989.22 = 38,705.16 : x
  2. Step 2: Convert to fraction form
    128,664.36/192,989.22 = 38,705.16/x
  3. Step 3: Cross multiply
    128,664.36x = 192,989.22 × 38,705.16
  4. Step 4: Simplify right side
    128,664.36x = 7,469,678,638.38
  5. Step 5: Solve for x
    x = 7,469,678,638.38/128,664.36
  6. Step 6: Final answer
    x = 58,055.54

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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.