Home / 132,721.97-183,196.35-90,305.10

Finding the Fourth Proportional to 132,721.97, 183,196.35 and 90,305.10

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Solution

The fourth proportional to 132,721.97, 183,196.35 and 90,305.10 is: 124,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,721.97 : 183,196.35 = 90,305.10 : x
  2. Step 2: Convert to fraction form
    132,721.97/183,196.35 = 90,305.10/x
  3. Step 3: Cross multiply
    132,721.97x = 183,196.35 × 90,305.10
  4. Step 4: Simplify right side
    132,721.97x = 16,543,564,706.39
  5. Step 5: Solve for x
    x = 16,543,564,706.39/132,721.97
  6. Step 6: Final answer
    x = 124,648.28

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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.