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Finding the Fourth Proportional to 205,612.02, 308,512.80 and 126,675.90

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Solution

The fourth proportional to 205,612.02, 308,512.80 and 126,675.90 is: 190,072.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,612.02 : 308,512.80 = 126,675.90 : x
  2. Step 2: Convert to fraction form
    205,612.02/308,512.80 = 126,675.90/x
  3. Step 3: Cross multiply
    205,612.02x = 308,512.80 × 126,675.90
  4. Step 4: Simplify right side
    205,612.02x = 39,081,136,601.52
  5. Step 5: Solve for x
    x = 39,081,136,601.52/205,612.02
  6. Step 6: Final answer
    x = 190,072.24

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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.