Home / 137,660.36-189,960.12-77,222.61

Finding the Fourth Proportional to 137,660.36, 189,960.12 and 77,222.61

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Solution

The fourth proportional to 137,660.36, 189,960.12 and 77,222.61 is: 106,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,660.36 : 189,960.12 = 77,222.61 : x
  2. Step 2: Convert to fraction form
    137,660.36/189,960.12 = 77,222.61/x
  3. Step 3: Cross multiply
    137,660.36x = 189,960.12 × 77,222.61
  4. Step 4: Simplify right side
    137,660.36x = 14,669,216,262.31
  5. Step 5: Solve for x
    x = 14,669,216,262.31/137,660.36
  6. Step 6: Final answer
    x = 106,560.94

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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.