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Finding the Fourth Proportional to 156,042.80, 234,121.80 and 50,865.20

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Solution

The fourth proportional to 156,042.80, 234,121.80 and 50,865.20 is: 76,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,042.80 : 234,121.80 = 50,865.20 : x
  2. Step 2: Convert to fraction form
    156,042.80/234,121.80 = 50,865.20/x
  3. Step 3: Cross multiply
    156,042.80x = 234,121.80 × 50,865.20
  4. Step 4: Simplify right side
    156,042.80x = 11,908,652,181.36
  5. Step 5: Solve for x
    x = 11,908,652,181.36/156,042.80
  6. Step 6: Final answer
    x = 76,316.58

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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.