Home / 204,904.80-307,551.60-126,172.80

Finding the Fourth Proportional to 204,904.80, 307,551.60 and 126,172.80

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Solution

The fourth proportional to 204,904.80, 307,551.60 and 126,172.80 is: 189,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,904.80 : 307,551.60 = 126,172.80 : x
  2. Step 2: Convert to fraction form
    204,904.80/307,551.60 = 126,172.80/x
  3. Step 3: Cross multiply
    204,904.80x = 307,551.60 × 126,172.80
  4. Step 4: Simplify right side
    204,904.80x = 38,804,646,516.48
  5. Step 5: Solve for x
    x = 38,804,646,516.48/204,904.80
  6. Step 6: Final answer
    x = 189,378.90

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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.