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Finding the Fourth Proportional to 203,108.04, 304,734.96 and 90,778.86

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Solution

The fourth proportional to 203,108.04, 304,734.96 and 90,778.86 is: 136,200.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,108.04 : 304,734.96 = 90,778.86 : x
  2. Step 2: Convert to fraction form
    203,108.04/304,734.96 = 90,778.86/x
  3. Step 3: Cross multiply
    203,108.04x = 304,734.96 × 90,778.86
  4. Step 4: Simplify right side
    203,108.04x = 27,663,492,270.95
  5. Step 5: Solve for x
    x = 27,663,492,270.95/203,108.04
  6. Step 6: Final answer
    x = 136,200.87

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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.