Home / 80,395.36-120,007.49-74,466.16

Finding the Fourth Proportional to 80,395.36, 120,007.49 and 74,466.16

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Solution

The fourth proportional to 80,395.36, 120,007.49 and 74,466.16 is: 111,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,395.36 : 120,007.49 = 74,466.16 : x
  2. Step 2: Convert to fraction form
    80,395.36/120,007.49 = 74,466.16/x
  3. Step 3: Cross multiply
    80,395.36x = 120,007.49 × 74,466.16
  4. Step 4: Simplify right side
    80,395.36x = 8,936,496,951.54
  5. Step 5: Solve for x
    x = 8,936,496,951.54/80,395.36
  6. Step 6: Final answer
    x = 111,156.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.