Home / 135,910.32-203,772.48-69,221.40

Finding the Fourth Proportional to 135,910.32, 203,772.48 and 69,221.40

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Solution

The fourth proportional to 135,910.32, 203,772.48 and 69,221.40 is: 103,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,910.32 : 203,772.48 = 69,221.40 : x
  2. Step 2: Convert to fraction form
    135,910.32/203,772.48 = 69,221.40/x
  3. Step 3: Cross multiply
    135,910.32x = 203,772.48 × 69,221.40
  4. Step 4: Simplify right side
    135,910.32x = 14,105,416,347.07
  5. Step 5: Solve for x
    x = 14,105,416,347.07/135,910.32
  6. Step 6: Final answer
    x = 103,784.73

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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.