Home / 120,642.27-180,921.42-49,544.70

Finding the Fourth Proportional to 120,642.27, 180,921.42 and 49,544.70

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Solution

The fourth proportional to 120,642.27, 180,921.42 and 49,544.70 is: 74,299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,642.27 : 180,921.42 = 49,544.70 : x
  2. Step 2: Convert to fraction form
    120,642.27/180,921.42 = 49,544.70/x
  3. Step 3: Cross multiply
    120,642.27x = 180,921.42 × 49,544.70
  4. Step 4: Simplify right side
    120,642.27x = 8,963,697,477.47
  5. Step 5: Solve for x
    x = 8,963,697,477.47/120,642.27
  6. Step 6: Final answer
    x = 74,299.81

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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.