Home / 137,048.28-189,178.92-89,313.36

Finding the Fourth Proportional to 137,048.28, 189,178.92 and 89,313.36

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Solution

The fourth proportional to 137,048.28, 189,178.92 and 89,313.36 is: 123,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,048.28 : 189,178.92 = 89,313.36 : x
  2. Step 2: Convert to fraction form
    137,048.28/189,178.92 = 89,313.36/x
  3. Step 3: Cross multiply
    137,048.28x = 189,178.92 × 89,313.36
  4. Step 4: Simplify right side
    137,048.28x = 16,896,204,986.37
  5. Step 5: Solve for x
    x = 16,896,204,986.37/137,048.28
  6. Step 6: Final answer
    x = 123,286.52

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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.