Home / 135,434.30-186,949.48-81,721.58

Finding the Fourth Proportional to 135,434.30, 186,949.48 and 81,721.58

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Solution

The fourth proportional to 135,434.30, 186,949.48 and 81,721.58 is: 112,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,434.30 : 186,949.48 = 81,721.58 : x
  2. Step 2: Convert to fraction form
    135,434.30/186,949.48 = 81,721.58/x
  3. Step 3: Cross multiply
    135,434.30x = 186,949.48 × 81,721.58
  4. Step 4: Simplify right side
    135,434.30x = 15,277,805,746.73
  5. Step 5: Solve for x
    x = 15,277,805,746.73/135,434.30
  6. Step 6: Final answer
    x = 112,806.03

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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.