Home / 120,120.05-165,752.97-66,396.39

Finding the Fourth Proportional to 120,120.05, 165,752.97 and 66,396.39

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Solution

The fourth proportional to 120,120.05, 165,752.97 and 66,396.39 is: 91,620.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,120.05 : 165,752.97 = 66,396.39 : x
  2. Step 2: Convert to fraction form
    120,120.05/165,752.97 = 66,396.39/x
  3. Step 3: Cross multiply
    120,120.05x = 165,752.97 × 66,396.39
  4. Step 4: Simplify right side
    120,120.05x = 11,005,398,839.78
  5. Step 5: Solve for x
    x = 11,005,398,839.78/120,120.05
  6. Step 6: Final answer
    x = 91,620.00

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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.