Home / 137,579.62-189,887.11-89,241.45

Finding the Fourth Proportional to 137,579.62, 189,887.11 and 89,241.45

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Solution

The fourth proportional to 137,579.62, 189,887.11 and 89,241.45 is: 123,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,579.62 : 189,887.11 = 89,241.45 : x
  2. Step 2: Convert to fraction form
    137,579.62/189,887.11 = 89,241.45/x
  3. Step 3: Cross multiply
    137,579.62x = 189,887.11 × 89,241.45
  4. Step 4: Simplify right side
    137,579.62x = 16,945,801,032.71
  5. Step 5: Solve for x
    x = 16,945,801,032.71/137,579.62
  6. Step 6: Final answer
    x = 123,170.87

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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.