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Finding the Fourth Proportional to 156,741.20, 235,111.80 and 134,190.80

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Solution

The fourth proportional to 156,741.20, 235,111.80 and 134,190.80 is: 201,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,741.20 : 235,111.80 = 134,190.80 : x
  2. Step 2: Convert to fraction form
    156,741.20/235,111.80 = 134,190.80/x
  3. Step 3: Cross multiply
    156,741.20x = 235,111.80 × 134,190.80
  4. Step 4: Simplify right side
    156,741.20x = 31,549,840,531.44
  5. Step 5: Solve for x
    x = 31,549,840,531.44/156,741.20
  6. Step 6: Final answer
    x = 201,286.20

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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.