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Finding the Fourth Proportional to 260,107.89, 390,161.83 and 73,119.39

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Solution

The fourth proportional to 260,107.89, 390,161.83 and 73,119.39 is: 109,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,107.89 : 390,161.83 = 73,119.39 : x
  2. Step 2: Convert to fraction form
    260,107.89/390,161.83 = 73,119.39/x
  3. Step 3: Cross multiply
    260,107.89x = 390,161.83 × 73,119.39
  4. Step 4: Simplify right side
    260,107.89x = 28,528,395,010.88
  5. Step 5: Solve for x
    x = 28,528,395,010.88/260,107.89
  6. Step 6: Final answer
    x = 109,679.08

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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.