Home / 128,112.10-192,168.15-33,342.10

Finding the Fourth Proportional to 128,112.10, 192,168.15 and 33,342.10

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Solution

The fourth proportional to 128,112.10, 192,168.15 and 33,342.10 is: 50,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,112.10 : 192,168.15 = 33,342.10 : x
  2. Step 2: Convert to fraction form
    128,112.10/192,168.15 = 33,342.10/x
  3. Step 3: Cross multiply
    128,112.10x = 192,168.15 × 33,342.10
  4. Step 4: Simplify right side
    128,112.10x = 6,407,289,674.12
  5. Step 5: Solve for x
    x = 6,407,289,674.12/128,112.10
  6. Step 6: Final answer
    x = 50,013.15

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1.5x scale

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.