Home / 129,979.24-179,371.36-73,394.28

Finding the Fourth Proportional to 129,979.24, 179,371.36 and 73,394.28

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Solution

The fourth proportional to 129,979.24, 179,371.36 and 73,394.28 is: 101,284.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.24 : 179,371.36 = 73,394.28 : x
  2. Step 2: Convert to fraction form
    129,979.24/179,371.36 = 73,394.28/x
  3. Step 3: Cross multiply
    129,979.24x = 179,371.36 × 73,394.28
  4. Step 4: Simplify right side
    129,979.24x = 13,164,831,819.82
  5. Step 5: Solve for x
    x = 13,164,831,819.82/129,979.24
  6. Step 6: Final answer
    x = 101,284.11

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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.