Home / 149,843.24-206,780.28-81,860.51

Finding the Fourth Proportional to 149,843.24, 206,780.28 and 81,860.51

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Solution

The fourth proportional to 149,843.24, 206,780.28 and 81,860.51 is: 112,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,843.24 : 206,780.28 = 81,860.51 : x
  2. Step 2: Convert to fraction form
    149,843.24/206,780.28 = 81,860.51/x
  3. Step 3: Cross multiply
    149,843.24x = 206,780.28 × 81,860.51
  4. Step 4: Simplify right side
    149,843.24x = 16,927,139,443.28
  5. Step 5: Solve for x
    x = 16,927,139,443.28/149,843.24
  6. Step 6: Final answer
    x = 112,965.66

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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.