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Finding the Fourth Proportional to 135,672.18, 203,445.09 and 79,529.46

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Solution

The fourth proportional to 135,672.18, 203,445.09 and 79,529.46 is: 119,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,672.18 : 203,445.09 = 79,529.46 : x
  2. Step 2: Convert to fraction form
    135,672.18/203,445.09 = 79,529.46/x
  3. Step 3: Cross multiply
    135,672.18x = 203,445.09 × 79,529.46
  4. Step 4: Simplify right side
    135,672.18x = 16,179,878,147.35
  5. Step 5: Solve for x
    x = 16,179,878,147.35/135,672.18
  6. Step 6: Final answer
    x = 119,257.15

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1.5x scale

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.