Home / 138,945.15-208,696.73-82,894.62

Finding the Fourth Proportional to 138,945.15, 208,696.73 and 82,894.62

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Solution

The fourth proportional to 138,945.15, 208,696.73 and 82,894.62 is: 124,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,945.15 : 208,696.73 = 82,894.62 : x
  2. Step 2: Convert to fraction form
    138,945.15/208,696.73 = 82,894.62/x
  3. Step 3: Cross multiply
    138,945.15x = 208,696.73 × 82,894.62
  4. Step 4: Simplify right side
    138,945.15x = 17,299,835,714.12
  5. Step 5: Solve for x
    x = 17,299,835,714.12/138,945.15
  6. Step 6: Final answer
    x = 124,508.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.