Home / 117,221.46-161,765.38-63,507.80

Finding the Fourth Proportional to 117,221.46, 161,765.38 and 63,507.80

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Solution

The fourth proportional to 117,221.46, 161,765.38 and 63,507.80 is: 87,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221.46 : 161,765.38 = 63,507.80 : x
  2. Step 2: Convert to fraction form
    117,221.46/161,765.38 = 63,507.80/x
  3. Step 3: Cross multiply
    117,221.46x = 161,765.38 × 63,507.80
  4. Step 4: Simplify right side
    117,221.46x = 10,273,363,399.96
  5. Step 5: Solve for x
    x = 10,273,363,399.96/117,221.46
  6. Step 6: Final answer
    x = 87,640.64

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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.