Home / 120,307.11-180,359.17-75,835.84

Finding the Fourth Proportional to 120,307.11, 180,359.17 and 75,835.84

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Solution

The fourth proportional to 120,307.11, 180,359.17 and 75,835.84 is: 113,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,307.11 : 180,359.17 = 75,835.84 : x
  2. Step 2: Convert to fraction form
    120,307.11/180,359.17 = 75,835.84/x
  3. Step 3: Cross multiply
    120,307.11x = 180,359.17 × 75,835.84
  4. Step 4: Simplify right side
    120,307.11x = 13,677,689,158.65
  5. Step 5: Solve for x
    x = 13,677,689,158.65/120,307.11
  6. Step 6: Final answer
    x = 113,689.78

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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.