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Finding the Fourth Proportional to 121,618.80, 182,341.80 and 55,090.80

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Solution

The fourth proportional to 121,618.80, 182,341.80 and 55,090.80 is: 82,597.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,618.80 : 182,341.80 = 55,090.80 : x
  2. Step 2: Convert to fraction form
    121,618.80/182,341.80 = 55,090.80/x
  3. Step 3: Cross multiply
    121,618.80x = 182,341.80 × 55,090.80
  4. Step 4: Simplify right side
    121,618.80x = 10,045,355,635.44
  5. Step 5: Solve for x
    x = 10,045,355,635.44/121,618.80
  6. Step 6: Final answer
    x = 82,597.06

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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.