Home / 126,387.09-189,639.23-55,300.35

Finding the Fourth Proportional to 126,387.09, 189,639.23 and 55,300.35

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Solution

The fourth proportional to 126,387.09, 189,639.23 and 55,300.35 is: 82,976.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,387.09 : 189,639.23 = 55,300.35 : x
  2. Step 2: Convert to fraction form
    126,387.09/189,639.23 = 55,300.35/x
  3. Step 3: Cross multiply
    126,387.09x = 189,639.23 × 55,300.35
  4. Step 4: Simplify right side
    126,387.09x = 10,487,115,516.23
  5. Step 5: Solve for x
    x = 10,487,115,516.23/126,387.09
  6. Step 6: Final answer
    x = 82,976.16

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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.