Home / 126,384.87-189,612.74-55,313.70

Finding the Fourth Proportional to 126,384.87, 189,612.74 and 55,313.70

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Solution

The fourth proportional to 126,384.87, 189,612.74 and 55,313.70 is: 82,986.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,384.87 : 189,612.74 = 55,313.70 : x
  2. Step 2: Convert to fraction form
    126,384.87/189,612.74 = 55,313.70/x
  3. Step 3: Cross multiply
    126,384.87x = 189,612.74 × 55,313.70
  4. Step 4: Simplify right side
    126,384.87x = 10,488,181,939.97
  5. Step 5: Solve for x
    x = 10,488,181,939.97/126,384.87
  6. Step 6: Final answer
    x = 82,986.06

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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.