Home / 166,106.70-249,151.11-81,782.80

Finding the Fourth Proportional to 166,106.70, 249,151.11 and 81,782.80

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Solution

The fourth proportional to 166,106.70, 249,151.11 and 81,782.80 is: 122,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,106.70 : 249,151.11 = 81,782.80 : x
  2. Step 2: Convert to fraction form
    166,106.70/249,151.11 = 81,782.80/x
  3. Step 3: Cross multiply
    166,106.70x = 249,151.11 × 81,782.80
  4. Step 4: Simplify right side
    166,106.70x = 20,376,274,153.15
  5. Step 5: Solve for x
    x = 20,376,274,153.15/166,106.70
  6. Step 6: Final answer
    x = 122,669.79

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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.