Home / 122,922.68-169,449-100,226.84

Finding the Fourth Proportional to 122,922.68, 169,449 and 100,226.84

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Solution

The fourth proportional to 122,922.68, 169,449 and 100,226.84 is: 138,162.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,922.68 : 169,449 = 100,226.84 : x
  2. Step 2: Convert to fraction form
    122,922.68/169,449 = 100,226.84/x
  3. Step 3: Cross multiply
    122,922.68x = 169,449 × 100,226.84
  4. Step 4: Simplify right side
    122,922.68x = 16,983,337,811.16
  5. Step 5: Solve for x
    x = 16,983,337,811.16/122,922.68
  6. Step 6: Final answer
    x = 138,162.77

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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.