Home / 120,869.92-166,811.76-73,135.04

Finding the Fourth Proportional to 120,869.92, 166,811.76 and 73,135.04

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Solution

The fourth proportional to 120,869.92, 166,811.76 and 73,135.04 is: 100,933.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,869.92 : 166,811.76 = 73,135.04 : x
  2. Step 2: Convert to fraction form
    120,869.92/166,811.76 = 73,135.04/x
  3. Step 3: Cross multiply
    120,869.92x = 166,811.76 × 73,135.04
  4. Step 4: Simplify right side
    120,869.92x = 12,199,784,740.07
  5. Step 5: Solve for x
    x = 12,199,784,740.07/120,869.92
  6. Step 6: Final answer
    x = 100,933.17

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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.