Home / 137,546.19-189,822.87-77,120.73

Finding the Fourth Proportional to 137,546.19, 189,822.87 and 77,120.73

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Solution

The fourth proportional to 137,546.19, 189,822.87 and 77,120.73 is: 106,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,546.19 : 189,822.87 = 77,120.73 : x
  2. Step 2: Convert to fraction form
    137,546.19/189,822.87 = 77,120.73/x
  3. Step 3: Cross multiply
    137,546.19x = 189,822.87 × 77,120.73
  4. Step 4: Simplify right side
    137,546.19x = 14,639,278,305.10
  5. Step 5: Solve for x
    x = 14,639,278,305.10/137,546.19
  6. Step 6: Final answer
    x = 106,431.73

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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.