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Finding the Fourth Proportional to 121,354.68, 182,090.70 and 49,305.72

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Solution

The fourth proportional to 121,354.68, 182,090.70 and 49,305.72 is: 73,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,354.68 : 182,090.70 = 49,305.72 : x
  2. Step 2: Convert to fraction form
    121,354.68/182,090.70 = 49,305.72/x
  3. Step 3: Cross multiply
    121,354.68x = 182,090.70 × 49,305.72
  4. Step 4: Simplify right side
    121,354.68x = 8,978,113,068.80
  5. Step 5: Solve for x
    x = 8,978,113,068.80/121,354.68
  6. Step 6: Final answer
    x = 73,982.42

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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.