Home / 137,580.12-189,887.79-89,241.95

Finding the Fourth Proportional to 137,580.12, 189,887.79 and 89,241.95

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Solution

The fourth proportional to 137,580.12, 189,887.79 and 89,241.95 is: 123,171.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,580.12 : 189,887.79 = 89,241.95 : x
  2. Step 2: Convert to fraction form
    137,580.12/189,887.79 = 89,241.95/x
  3. Step 3: Cross multiply
    137,580.12x = 189,887.79 × 89,241.95
  4. Step 4: Simplify right side
    137,580.12x = 16,945,957,470.17
  5. Step 5: Solve for x
    x = 16,945,957,470.17/137,580.12
  6. Step 6: Final answer
    x = 123,171.56

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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.