Home / 120,306.11-180,357.68-75,834.84

Finding the Fourth Proportional to 120,306.11, 180,357.68 and 75,834.84

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Solution

The fourth proportional to 120,306.11, 180,357.68 and 75,834.84 is: 113,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,306.11 : 180,357.68 = 75,834.84 : x
  2. Step 2: Convert to fraction form
    120,306.11/180,357.68 = 75,834.84/x
  3. Step 3: Cross multiply
    120,306.11x = 180,357.68 × 75,834.84
  4. Step 4: Simplify right side
    120,306.11x = 13,677,395,426.40
  5. Step 5: Solve for x
    x = 13,677,395,426.40/120,306.11
  6. Step 6: Final answer
    x = 113,688.29

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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.