Home / 149,743.95-206,645.09-81,760.72

Finding the Fourth Proportional to 149,743.95, 206,645.09 and 81,760.72

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Solution

The fourth proportional to 149,743.95, 206,645.09 and 81,760.72 is: 112,828.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,743.95 : 206,645.09 = 81,760.72 : x
  2. Step 2: Convert to fraction form
    149,743.95/206,645.09 = 81,760.72/x
  3. Step 3: Cross multiply
    149,743.95x = 206,645.09 × 81,760.72
  4. Step 4: Simplify right side
    149,743.95x = 16,895,450,417.45
  5. Step 5: Solve for x
    x = 16,895,450,417.45/149,743.95
  6. Step 6: Final answer
    x = 112,828.94

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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.