Home / 120,131.14-165,784.43-66,419.62

Finding the Fourth Proportional to 120,131.14, 165,784.43 and 66,419.62

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Solution

The fourth proportional to 120,131.14, 165,784.43 and 66,419.62 is: 91,660.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.14 : 165,784.43 = 66,419.62 : x
  2. Step 2: Convert to fraction form
    120,131.14/165,784.43 = 66,419.62/x
  3. Step 3: Cross multiply
    120,131.14x = 165,784.43 × 66,419.62
  4. Step 4: Simplify right side
    120,131.14x = 11,011,338,842.52
  5. Step 5: Solve for x
    x = 11,011,338,842.52/120,131.14
  6. Step 6: Final answer
    x = 91,660.99

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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.