Home / 201,990.80-278,923.56-126,669.20

Finding the Fourth Proportional to 201,990.80, 278,923.56 and 126,669.20

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Solution

The fourth proportional to 201,990.80, 278,923.56 and 126,669.20 is: 174,914.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,990.80 : 278,923.56 = 126,669.20 : x
  2. Step 2: Convert to fraction form
    201,990.80/278,923.56 = 126,669.20/x
  3. Step 3: Cross multiply
    201,990.80x = 278,923.56 × 126,669.20
  4. Step 4: Simplify right side
    201,990.80x = 35,331,024,206.35
  5. Step 5: Solve for x
    x = 35,331,024,206.35/201,990.80
  6. Step 6: Final answer
    x = 174,914.03

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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.