Home / 166,103.30-249,139.16-66,236.78

Finding the Fourth Proportional to 166,103.30, 249,139.16 and 66,236.78

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Solution

The fourth proportional to 166,103.30, 249,139.16 and 66,236.78 is: 99,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,103.30 : 249,139.16 = 66,236.78 : x
  2. Step 2: Convert to fraction form
    166,103.30/249,139.16 = 66,236.78/x
  3. Step 3: Cross multiply
    166,103.30x = 249,139.16 × 66,236.78
  4. Step 4: Simplify right side
    166,103.30x = 16,502,176,021.97
  5. Step 5: Solve for x
    x = 16,502,176,021.97/166,103.30
  6. Step 6: Final answer
    x = 99,348.87

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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.