Home / 121,156.22-181,734.38-54,518.51

Finding the Fourth Proportional to 121,156.22, 181,734.38 and 54,518.51

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Solution

The fourth proportional to 121,156.22, 181,734.38 and 54,518.51 is: 81,777.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,156.22 : 181,734.38 = 54,518.51 : x
  2. Step 2: Convert to fraction form
    121,156.22/181,734.38 = 54,518.51/x
  3. Step 3: Cross multiply
    121,156.22x = 181,734.38 × 54,518.51
  4. Step 4: Simplify right side
    121,156.22x = 9,907,887,795.10
  5. Step 5: Solve for x
    x = 9,907,887,795.10/121,156.22
  6. Step 6: Final answer
    x = 81,777.79

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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.