Home / 106,940.10-160,410.15-76,872.90

Finding the Fourth Proportional to 106,940.10, 160,410.15 and 76,872.90

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Solution

The fourth proportional to 106,940.10, 160,410.15 and 76,872.90 is: 115,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,940.10 : 160,410.15 = 76,872.90 : x
  2. Step 2: Convert to fraction form
    106,940.10/160,410.15 = 76,872.90/x
  3. Step 3: Cross multiply
    106,940.10x = 160,410.15 × 76,872.90
  4. Step 4: Simplify right side
    106,940.10x = 12,331,193,419.94
  5. Step 5: Solve for x
    x = 12,331,193,419.94/106,940.10
  6. Step 6: Final answer
    x = 115,309.35

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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.