Home / 120,716.15-181,193.45-90,625.77

Finding the Fourth Proportional to 120,716.15, 181,193.45 and 90,625.77

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Solution

The fourth proportional to 120,716.15, 181,193.45 and 90,625.77 is: 136,028.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.15 : 181,193.45 = 90,625.77 : x
  2. Step 2: Convert to fraction form
    120,716.15/181,193.45 = 90,625.77/x
  3. Step 3: Cross multiply
    120,716.15x = 181,193.45 × 90,625.77
  4. Step 4: Simplify right side
    120,716.15x = 16,420,795,472.08
  5. Step 5: Solve for x
    x = 16,420,795,472.08/120,716.15
  6. Step 6: Final answer
    x = 136,028.16

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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.