Home / 205,985.48-284,105.22-138,079.04

Finding the Fourth Proportional to 205,985.48, 284,105.22 and 138,079.04

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Solution

The fourth proportional to 205,985.48, 284,105.22 and 138,079.04 is: 190,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,985.48 : 284,105.22 = 138,079.04 : x
  2. Step 2: Convert to fraction form
    205,985.48/284,105.22 = 138,079.04/x
  3. Step 3: Cross multiply
    205,985.48x = 284,105.22 × 138,079.04
  4. Step 4: Simplify right side
    205,985.48x = 39,228,976,036.59
  5. Step 5: Solve for x
    x = 39,228,976,036.59/205,985.48
  6. Step 6: Final answer
    x = 190,445.35

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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.