Home / 120,411.97-180,619.98-45,567.36

Finding the Fourth Proportional to 120,411.97, 180,619.98 and 45,567.36

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Solution

The fourth proportional to 120,411.97, 180,619.98 and 45,567.36 is: 68,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,411.97 : 180,619.98 = 45,567.36 : x
  2. Step 2: Convert to fraction form
    120,411.97/180,619.98 = 45,567.36/x
  3. Step 3: Cross multiply
    120,411.97x = 180,619.98 × 45,567.36
  4. Step 4: Simplify right side
    120,411.97x = 8,230,375,480.98
  5. Step 5: Solve for x
    x = 8,230,375,480.98/120,411.97
  6. Step 6: Final answer
    x = 68,351.81

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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.