Home / 135,385.16-203,108.88-45,439.80

Finding the Fourth Proportional to 135,385.16, 203,108.88 and 45,439.80

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Solution

The fourth proportional to 135,385.16, 203,108.88 and 45,439.80 is: 68,170.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,385.16 : 203,108.88 = 45,439.80 : x
  2. Step 2: Convert to fraction form
    135,385.16/203,108.88 = 45,439.80/x
  3. Step 3: Cross multiply
    135,385.16x = 203,108.88 × 45,439.80
  4. Step 4: Simplify right side
    135,385.16x = 9,229,226,885.42
  5. Step 5: Solve for x
    x = 9,229,226,885.42/135,385.16
  6. Step 6: Final answer
    x = 68,170.15

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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.