Home / 166,105.90-249,195.30-81,906.40

Finding the Fourth Proportional to 166,105.90, 249,195.30 and 81,906.40

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Solution

The fourth proportional to 166,105.90, 249,195.30 and 81,906.40 is: 122,877.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,105.90 : 249,195.30 = 81,906.40 : x
  2. Step 2: Convert to fraction form
    166,105.90/249,195.30 = 81,906.40/x
  3. Step 3: Cross multiply
    166,105.90x = 249,195.30 × 81,906.40
  4. Step 4: Simplify right side
    166,105.90x = 20,410,689,919.92
  5. Step 5: Solve for x
    x = 20,410,689,919.92/166,105.90
  6. Step 6: Final answer
    x = 122,877.57

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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.