Home / 109,399.74-150,896.70-66,979.26

Finding the Fourth Proportional to 109,399.74, 150,896.70 and 66,979.26

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Solution

The fourth proportional to 109,399.74, 150,896.70 and 66,979.26 is: 92,385.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,399.74 : 150,896.70 = 66,979.26 : x
  2. Step 2: Convert to fraction form
    109,399.74/150,896.70 = 66,979.26/x
  3. Step 3: Cross multiply
    109,399.74x = 150,896.70 × 66,979.26
  4. Step 4: Simplify right side
    109,399.74x = 10,106,949,302.44
  5. Step 5: Solve for x
    x = 10,106,949,302.44/109,399.74
  6. Step 6: Final answer
    x = 92,385.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.