Home / 120,202.72-165,868.56-66,486.28

Finding the Fourth Proportional to 120,202.72, 165,868.56 and 66,486.28

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Solution

The fourth proportional to 120,202.72, 165,868.56 and 66,486.28 is: 91,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,202.72 : 165,868.56 = 66,486.28 : x
  2. Step 2: Convert to fraction form
    120,202.72/165,868.56 = 66,486.28/x
  3. Step 3: Cross multiply
    120,202.72x = 165,868.56 × 66,486.28
  4. Step 4: Simplify right side
    120,202.72x = 11,027,983,523.36
  5. Step 5: Solve for x
    x = 11,027,983,523.36/120,202.72
  6. Step 6: Final answer
    x = 91,744.88

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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.