Home / 137,243.91-189,246.20-89,408.55

Finding the Fourth Proportional to 137,243.91, 189,246.20 and 89,408.55

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Solution

The fourth proportional to 137,243.91, 189,246.20 and 89,408.55 is: 123,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,243.91 : 189,246.20 = 89,408.55 : x
  2. Step 2: Convert to fraction form
    137,243.91/189,246.20 = 89,408.55/x
  3. Step 3: Cross multiply
    137,243.91x = 189,246.20 × 89,408.55
  4. Step 4: Simplify right side
    137,243.91x = 16,920,227,887.97
  5. Step 5: Solve for x
    x = 16,920,227,887.97/137,243.91
  6. Step 6: Final answer
    x = 123,285.82

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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.