Home / 128,389.16-192,546.11-48,369.39

Finding the Fourth Proportional to 128,389.16, 192,546.11 and 48,369.39

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Solution

The fourth proportional to 128,389.16, 192,546.11 and 48,369.39 is: 72,539.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,389.16 : 192,546.11 = 48,369.39 : x
  2. Step 2: Convert to fraction form
    128,389.16/192,546.11 = 48,369.39/x
  3. Step 3: Cross multiply
    128,389.16x = 192,546.11 × 48,369.39
  4. Step 4: Simplify right side
    128,389.16x = 9,313,338,278.83
  5. Step 5: Solve for x
    x = 9,313,338,278.83/128,389.16
  6. Step 6: Final answer
    x = 72,539.91

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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.