Home / 120,220.39-165,909.03-66,504.48

Finding the Fourth Proportional to 120,220.39, 165,909.03 and 66,504.48

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Solution

The fourth proportional to 120,220.39, 165,909.03 and 66,504.48 is: 91,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.39 : 165,909.03 = 66,504.48 : x
  2. Step 2: Convert to fraction form
    120,220.39/165,909.03 = 66,504.48/x
  3. Step 3: Cross multiply
    120,220.39x = 165,909.03 × 66,504.48
  4. Step 4: Simplify right side
    120,220.39x = 11,033,693,434.93
  5. Step 5: Solve for x
    x = 11,033,693,434.93/120,220.39
  6. Step 6: Final answer
    x = 91,778.89

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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.