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Finding the Fourth Proportional to 135,728.60, 203,672.28 and 56,836.22

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Solution

The fourth proportional to 135,728.60, 203,672.28 and 56,836.22 is: 85,287.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,728.60 : 203,672.28 = 56,836.22 : x
  2. Step 2: Convert to fraction form
    135,728.60/203,672.28 = 56,836.22/x
  3. Step 3: Cross multiply
    135,728.60x = 203,672.28 × 56,836.22
  4. Step 4: Simplify right side
    135,728.60x = 11,575,962,513.98
  5. Step 5: Solve for x
    x = 11,575,962,513.98/135,728.60
  6. Step 6: Final answer
    x = 85,287.57

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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.