Home / 132,717.80-183,137.28-81,722.36

Finding the Fourth Proportional to 132,717.80, 183,137.28 and 81,722.36

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Solution

The fourth proportional to 132,717.80, 183,137.28 and 81,722.36 is: 112,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,717.80 : 183,137.28 = 81,722.36 : x
  2. Step 2: Convert to fraction form
    132,717.80/183,137.28 = 81,722.36/x
  3. Step 3: Cross multiply
    132,717.80x = 183,137.28 × 81,722.36
  4. Step 4: Simplify right side
    132,717.80x = 14,966,410,725.58
  5. Step 5: Solve for x
    x = 14,966,410,725.58/132,717.80
  6. Step 6: Final answer
    x = 112,768.68

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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.