Home / 149,650.76-206,519.26-81,668.28

Finding the Fourth Proportional to 149,650.76, 206,519.26 and 81,668.28

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Solution

The fourth proportional to 149,650.76, 206,519.26 and 81,668.28 is: 112,702.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,650.76 : 206,519.26 = 81,668.28 : x
  2. Step 2: Convert to fraction form
    149,650.76/206,519.26 = 81,668.28/x
  3. Step 3: Cross multiply
    149,650.76x = 206,519.26 × 81,668.28
  4. Step 4: Simplify right side
    149,650.76x = 16,866,072,751.07
  5. Step 5: Solve for x
    x = 16,866,072,751.07/149,650.76
  6. Step 6: Final answer
    x = 112,702.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.