Home / 120,222.50-165,911.94-66,506.59

Finding the Fourth Proportional to 120,222.50, 165,911.94 and 66,506.59

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Solution

The fourth proportional to 120,222.50, 165,911.94 and 66,506.59 is: 91,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,222.50 : 165,911.94 = 66,506.59 : x
  2. Step 2: Convert to fraction form
    120,222.50/165,911.94 = 66,506.59/x
  3. Step 3: Cross multiply
    120,222.50x = 165,911.94 × 66,506.59
  4. Step 4: Simplify right side
    120,222.50x = 11,034,237,037.15
  5. Step 5: Solve for x
    x = 11,034,237,037.15/120,222.50
  6. Step 6: Final answer
    x = 91,781.80

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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.