Home / 120,130.26-165,783.22-66,418.75

Finding the Fourth Proportional to 120,130.26, 165,783.22 and 66,418.75

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Solution

The fourth proportional to 120,130.26, 165,783.22 and 66,418.75 is: 91,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,130.26 : 165,783.22 = 66,418.75 : x
  2. Step 2: Convert to fraction form
    120,130.26/165,783.22 = 66,418.75/x
  3. Step 3: Cross multiply
    120,130.26x = 165,783.22 × 66,418.75
  4. Step 4: Simplify right side
    120,130.26x = 11,011,113,414.46
  5. Step 5: Solve for x
    x = 11,011,113,414.46/120,130.26
  6. Step 6: Final answer
    x = 91,659.78

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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.