Home / 120,037.48-165,661.42-66,327.20

Finding the Fourth Proportional to 120,037.48, 165,661.42 and 66,327.20

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Solution

The fourth proportional to 120,037.48, 165,661.42 and 66,327.20 is: 91,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,037.48 : 165,661.42 = 66,327.20 : x
  2. Step 2: Convert to fraction form
    120,037.48/165,661.42 = 66,327.20/x
  3. Step 3: Cross multiply
    120,037.48x = 165,661.42 × 66,327.20
  4. Step 4: Simplify right side
    120,037.48x = 10,987,858,136.62
  5. Step 5: Solve for x
    x = 10,987,858,136.62/120,037.48
  6. Step 6: Final answer
    x = 91,536.89

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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.