Home / 121,318.88-181,855.20-46,419.80

Finding the Fourth Proportional to 121,318.88, 181,855.20 and 46,419.80

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Solution

The fourth proportional to 121,318.88, 181,855.20 and 46,419.80 is: 69,582.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,318.88 : 181,855.20 = 46,419.80 : x
  2. Step 2: Convert to fraction form
    121,318.88/181,855.20 = 46,419.80/x
  3. Step 3: Cross multiply
    121,318.88x = 181,855.20 × 46,419.80
  4. Step 4: Simplify right side
    121,318.88x = 8,441,682,012.96
  5. Step 5: Solve for x
    x = 8,441,682,012.96/121,318.88
  6. Step 6: Final answer
    x = 69,582.59

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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.