Home / 81,464.40-122,196.60-74,247.30

Finding the Fourth Proportional to 81,464.40, 122,196.60 and 74,247.30

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Solution

The fourth proportional to 81,464.40, 122,196.60 and 74,247.30 is: 111,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,464.40 : 122,196.60 = 74,247.30 : x
  2. Step 2: Convert to fraction form
    81,464.40/122,196.60 = 74,247.30/x
  3. Step 3: Cross multiply
    81,464.40x = 122,196.60 × 74,247.30
  4. Step 4: Simplify right side
    81,464.40x = 9,072,767,619.18
  5. Step 5: Solve for x
    x = 9,072,767,619.18/81,464.40
  6. Step 6: Final answer
    x = 111,370.95

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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.