Home / 120,717.90-180,910.08-45,758.48

Finding the Fourth Proportional to 120,717.90, 180,910.08 and 45,758.48

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Solution

The fourth proportional to 120,717.90, 180,910.08 and 45,758.48 is: 68,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,717.90 : 180,910.08 = 45,758.48 : x
  2. Step 2: Convert to fraction form
    120,717.90/180,910.08 = 45,758.48/x
  3. Step 3: Cross multiply
    120,717.90x = 180,910.08 × 45,758.48
  4. Step 4: Simplify right side
    120,717.90x = 8,278,170,277.48
  5. Step 5: Solve for x
    x = 8,278,170,277.48/120,717.90
  6. Step 6: Final answer
    x = 68,574.51

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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.