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Finding the Fourth Proportional to 120,092.88, 179,942.52 and 84,860.40

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Solution

The fourth proportional to 120,092.88, 179,942.52 and 84,860.40 is: 127,151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,092.88 : 179,942.52 = 84,860.40 : x
  2. Step 2: Convert to fraction form
    120,092.88/179,942.52 = 84,860.40/x
  3. Step 3: Cross multiply
    120,092.88x = 179,942.52 × 84,860.40
  4. Step 4: Simplify right side
    120,092.88x = 15,269,994,224.21
  5. Step 5: Solve for x
    x = 15,269,994,224.21/120,092.88
  6. Step 6: Final answer
    x = 127,151.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.