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Finding the Fourth Proportional to 156,102, 234,144.78 and 43,790.04

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Solution

The fourth proportional to 156,102, 234,144.78 and 43,790.04 is: 65,682.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,102 : 234,144.78 = 43,790.04 : x
  2. Step 2: Convert to fraction form
    156,102/234,144.78 = 43,790.04/x
  3. Step 3: Cross multiply
    156,102x = 234,144.78 × 43,790.04
  4. Step 4: Simplify right side
    156,102x = 10,253,209,281.99
  5. Step 5: Solve for x
    x = 10,253,209,281.99/156,102
  6. Step 6: Final answer
    x = 65,682.75

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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.