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Finding the Fourth Proportional to 135,611.70, 203,490.45 and 56,733.90

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Solution

The fourth proportional to 135,611.70, 203,490.45 and 56,733.90 is: 85,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,611.70 : 203,490.45 = 56,733.90 : x
  2. Step 2: Convert to fraction form
    135,611.70/203,490.45 = 56,733.90/x
  3. Step 3: Cross multiply
    135,611.70x = 203,490.45 × 56,733.90
  4. Step 4: Simplify right side
    135,611.70x = 11,544,806,841.26
  5. Step 5: Solve for x
    x = 11,544,806,841.26/135,611.70
  6. Step 6: Final answer
    x = 85,131.35

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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.