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Finding the Fourth Proportional to 136,498.80, 188,998.20 and 126,001.20

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Solution

The fourth proportional to 136,498.80, 188,998.20 and 126,001.20 is: 174,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,498.80 : 188,998.20 = 126,001.20 : x
  2. Step 2: Convert to fraction form
    136,498.80/188,998.20 = 126,001.20/x
  3. Step 3: Cross multiply
    136,498.80x = 188,998.20 × 126,001.20
  4. Step 4: Simplify right side
    136,498.80x = 23,813,999,997.84
  5. Step 5: Solve for x
    x = 23,813,999,997.84/136,498.80
  6. Step 6: Final answer
    x = 174,463.07

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1.5x scale

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.