Home / 120,131.01-165,784.26-66,419.50

Finding the Fourth Proportional to 120,131.01, 165,784.26 and 66,419.50

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Solution

The fourth proportional to 120,131.01, 165,784.26 and 66,419.50 is: 91,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.01 : 165,784.26 = 66,419.50 : x
  2. Step 2: Convert to fraction form
    120,131.01/165,784.26 = 66,419.50/x
  3. Step 3: Cross multiply
    120,131.01x = 165,784.26 × 66,419.50
  4. Step 4: Simplify right side
    120,131.01x = 11,011,306,496.05
  5. Step 5: Solve for x
    x = 11,011,306,496.05/120,131.01
  6. Step 6: Final answer
    x = 91,660.82

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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.