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Finding the Fourth Proportional to 260,089.26, 390,133.88 and 73,100.76

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Solution

The fourth proportional to 260,089.26, 390,133.88 and 73,100.76 is: 109,651.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,089.26 : 390,133.88 = 73,100.76 : x
  2. Step 2: Convert to fraction form
    260,089.26/390,133.88 = 73,100.76/x
  3. Step 3: Cross multiply
    260,089.26x = 390,133.88 × 73,100.76
  4. Step 4: Simplify right side
    260,089.26x = 28,519,083,129.75
  5. Step 5: Solve for x
    x = 28,519,083,129.75/260,089.26
  6. Step 6: Final answer
    x = 109,651.14

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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.