Home / 166,105.95-249,149.98-81,782.04

Finding the Fourth Proportional to 166,105.95, 249,149.98 and 81,782.04

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Solution

The fourth proportional to 166,105.95, 249,149.98 and 81,782.04 is: 122,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,105.95 : 249,149.98 = 81,782.04 : x
  2. Step 2: Convert to fraction form
    166,105.95/249,149.98 = 81,782.04/x
  3. Step 3: Cross multiply
    166,105.95x = 249,149.98 × 81,782.04
  4. Step 4: Simplify right side
    166,105.95x = 20,375,993,630.36
  5. Step 5: Solve for x
    x = 20,375,993,630.36/166,105.95
  6. Step 6: Final answer
    x = 122,668.66

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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.