Home / 120,286.48-165,994.12-66,571.60

Finding the Fourth Proportional to 120,286.48, 165,994.12 and 66,571.60

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Solution

The fourth proportional to 120,286.48, 165,994.12 and 66,571.60 is: 91,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,286.48 : 165,994.12 = 66,571.60 : x
  2. Step 2: Convert to fraction form
    120,286.48/165,994.12 = 66,571.60/x
  3. Step 3: Cross multiply
    120,286.48x = 165,994.12 × 66,571.60
  4. Step 4: Simplify right side
    120,286.48x = 11,050,494,158.99
  5. Step 5: Solve for x
    x = 11,050,494,158.99/120,286.48
  6. Step 6: Final answer
    x = 91,868.13

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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.