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Finding the Fourth Proportional to 121,878.53, 182,840.67 and 55,323.33

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Solution

The fourth proportional to 121,878.53, 182,840.67 and 55,323.33 is: 82,995.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,878.53 : 182,840.67 = 55,323.33 : x
  2. Step 2: Convert to fraction form
    121,878.53/182,840.67 = 55,323.33/x
  3. Step 3: Cross multiply
    121,878.53x = 182,840.67 × 55,323.33
  4. Step 4: Simplify right side
    121,878.53x = 10,115,354,447.21
  5. Step 5: Solve for x
    x = 10,115,354,447.21/121,878.53
  6. Step 6: Final answer
    x = 82,995.38

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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.