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Finding the Fourth Proportional to 156,915.20, 235,027.20 and 136,179.20

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Solution

The fourth proportional to 156,915.20, 235,027.20 and 136,179.20 is: 203,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.20 : 235,027.20 = 136,179.20 : x
  2. Step 2: Convert to fraction form
    156,915.20/235,027.20 = 136,179.20/x
  3. Step 3: Cross multiply
    156,915.20x = 235,027.20 × 136,179.20
  4. Step 4: Simplify right side
    156,915.20x = 32,005,816,074.24
  5. Step 5: Solve for x
    x = 32,005,816,074.24/156,915.20
  6. Step 6: Final answer
    x = 203,968.87

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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.