Home / 128,648.18-192,917.60-52,694.36

Finding the Fourth Proportional to 128,648.18, 192,917.60 and 52,694.36

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Solution

The fourth proportional to 128,648.18, 192,917.60 and 52,694.36 is: 79,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,648.18 : 192,917.60 = 52,694.36 : x
  2. Step 2: Convert to fraction form
    128,648.18/192,917.60 = 52,694.36/x
  3. Step 3: Cross multiply
    128,648.18x = 192,917.60 × 52,694.36
  4. Step 4: Simplify right side
    128,648.18x = 10,165,669,683.56
  5. Step 5: Solve for x
    x = 10,165,669,683.56/128,648.18
  6. Step 6: Final answer
    x = 79,019.15

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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.