Home / 156,512.72-234,244.20-128,431.64

Finding the Fourth Proportional to 156,512.72, 234,244.20 and 128,431.64

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Solution

The fourth proportional to 156,512.72, 234,244.20 and 128,431.64 is: 192,216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,512.72 : 234,244.20 = 128,431.64 : x
  2. Step 2: Convert to fraction form
    156,512.72/234,244.20 = 128,431.64/x
  3. Step 3: Cross multiply
    156,512.72x = 234,244.20 × 128,431.64
  4. Step 4: Simplify right side
    156,512.72x = 30,084,366,766.49
  5. Step 5: Solve for x
    x = 30,084,366,766.49/156,512.72
  6. Step 6: Final answer
    x = 192,216.75

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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.