Home / 108,905.36-150,305.68-66,488.56

Finding the Fourth Proportional to 108,905.36, 150,305.68 and 66,488.56

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Solution

The fourth proportional to 108,905.36, 150,305.68 and 66,488.56 is: 91,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,905.36 : 150,305.68 = 66,488.56 : x
  2. Step 2: Convert to fraction form
    108,905.36/150,305.68 = 66,488.56/x
  3. Step 3: Cross multiply
    108,905.36x = 150,305.68 × 66,488.56
  4. Step 4: Simplify right side
    108,905.36x = 9,993,608,223.02
  5. Step 5: Solve for x
    x = 9,993,608,223.02/108,905.36
  6. Step 6: Final answer
    x = 91,764.15

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1.5x scale

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.