Home / 205,862.72-284,070.48-115,213.28

Finding the Fourth Proportional to 205,862.72, 284,070.48 and 115,213.28

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Solution

The fourth proportional to 205,862.72, 284,070.48 and 115,213.28 is: 158,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,862.72 : 284,070.48 = 115,213.28 : x
  2. Step 2: Convert to fraction form
    205,862.72/284,070.48 = 115,213.28/x
  3. Step 3: Cross multiply
    205,862.72x = 284,070.48 × 115,213.28
  4. Step 4: Simplify right side
    205,862.72x = 32,728,691,751.97
  5. Step 5: Solve for x
    x = 32,728,691,751.97/205,862.72
  6. Step 6: Final answer
    x = 158,983.09

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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.