Home / 156,002.20-234,003.30-128,008.60

Finding the Fourth Proportional to 156,002.20, 234,003.30 and 128,008.60

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Solution

The fourth proportional to 156,002.20, 234,003.30 and 128,008.60 is: 192,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,002.20 : 234,003.30 = 128,008.60 : x
  2. Step 2: Convert to fraction form
    156,002.20/234,003.30 = 128,008.60/x
  3. Step 3: Cross multiply
    156,002.20x = 234,003.30 × 128,008.60
  4. Step 4: Simplify right side
    156,002.20x = 29,954,434,828.38
  5. Step 5: Solve for x
    x = 29,954,434,828.38/156,002.20
  6. Step 6: Final answer
    x = 192,012.90

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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.