Home / 117,971.92-162,966.36-82,144

Finding the Fourth Proportional to 117,971.92, 162,966.36 and 82,144

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Solution

The fourth proportional to 117,971.92, 162,966.36 and 82,144 is: 113,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,971.92 : 162,966.36 = 82,144 : x
  2. Step 2: Convert to fraction form
    117,971.92/162,966.36 = 82,144/x
  3. Step 3: Cross multiply
    117,971.92x = 162,966.36 × 82,144
  4. Step 4: Simplify right side
    117,971.92x = 13,386,708,675.84
  5. Step 5: Solve for x
    x = 13,386,708,675.84/117,971.92
  6. Step 6: Final answer
    x = 113,473.69

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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.