Home / 90,194.86-135,338.96-65,439.23

Finding the Fourth Proportional to 90,194.86, 135,338.96 and 65,439.23

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Solution

The fourth proportional to 90,194.86, 135,338.96 and 65,439.23 is: 98,192.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,194.86 : 135,338.96 = 65,439.23 : x
  2. Step 2: Convert to fraction form
    90,194.86/135,338.96 = 65,439.23/x
  3. Step 3: Cross multiply
    90,194.86x = 135,338.96 × 65,439.23
  4. Step 4: Simplify right side
    90,194.86x = 8,856,477,331.40
  5. Step 5: Solve for x
    x = 8,856,477,331.40/90,194.86
  6. Step 6: Final answer
    x = 98,192.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.