Home / 206,445.12-309,511.68-106,561.92

Finding the Fourth Proportional to 206,445.12, 309,511.68 and 106,561.92

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Solution

The fourth proportional to 206,445.12, 309,511.68 and 106,561.92 is: 159,762.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,445.12 : 309,511.68 = 106,561.92 : x
  2. Step 2: Convert to fraction form
    206,445.12/309,511.68 = 106,561.92/x
  3. Step 3: Cross multiply
    206,445.12x = 309,511.68 × 106,561.92
  4. Step 4: Simplify right side
    206,445.12x = 32,982,158,883.23
  5. Step 5: Solve for x
    x = 32,982,158,883.23/206,445.12
  6. Step 6: Final answer
    x = 159,762.36

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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.