Home / 121,311.23-181,828.80-73,821.58

Finding the Fourth Proportional to 121,311.23, 181,828.80 and 73,821.58

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Solution

The fourth proportional to 121,311.23, 181,828.80 and 73,821.58 is: 110,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,311.23 : 181,828.80 = 73,821.58 : x
  2. Step 2: Convert to fraction form
    121,311.23/181,828.80 = 73,821.58/x
  3. Step 3: Cross multiply
    121,311.23x = 181,828.80 × 73,821.58
  4. Step 4: Simplify right side
    121,311.23x = 13,422,888,850.93
  5. Step 5: Solve for x
    x = 13,422,888,850.93/121,311.23
  6. Step 6: Final answer
    x = 110,648.37

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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.