Home / 128,297.28-192,390.24-49,356.10

Finding the Fourth Proportional to 128,297.28, 192,390.24 and 49,356.10

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Solution

The fourth proportional to 128,297.28, 192,390.24 and 49,356.10 is: 74,012.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,297.28 : 192,390.24 = 49,356.10 : x
  2. Step 2: Convert to fraction form
    128,297.28/192,390.24 = 49,356.10/x
  3. Step 3: Cross multiply
    128,297.28x = 192,390.24 × 49,356.10
  4. Step 4: Simplify right side
    128,297.28x = 9,495,632,072.41
  5. Step 5: Solve for x
    x = 9,495,632,072.41/128,297.28
  6. Step 6: Final answer
    x = 74,012.73

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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.