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Finding the Fourth Proportional to 89,998.86, 123,119.09 and 89,619.78

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Solution

The fourth proportional to 89,998.86, 123,119.09 and 89,619.78 is: 122,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,998.86 : 123,119.09 = 89,619.78 : x
  2. Step 2: Convert to fraction form
    89,998.86/123,119.09 = 89,619.78/x
  3. Step 3: Cross multiply
    89,998.86x = 123,119.09 × 89,619.78
  4. Step 4: Simplify right side
    89,998.86x = 11,033,905,311.50
  5. Step 5: Solve for x
    x = 11,033,905,311.50/89,998.86
  6. Step 6: Final answer
    x = 122,600.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.