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Finding the Fourth Proportional to 260,107, 390,160.56 and 73,118.56

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Solution

The fourth proportional to 260,107, 390,160.56 and 73,118.56 is: 109,677.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,107 : 390,160.56 = 73,118.56 : x
  2. Step 2: Convert to fraction form
    260,107/390,160.56 = 73,118.56/x
  3. Step 3: Cross multiply
    260,107x = 390,160.56 × 73,118.56
  4. Step 4: Simplify right side
    260,107x = 28,527,978,315.99
  5. Step 5: Solve for x
    x = 28,527,978,315.99/260,107
  6. Step 6: Final answer
    x = 109,677.86

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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.