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Finding the Fourth Proportional to 156,392.70, 234,962.94 and 100,342.89

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Solution

The fourth proportional to 156,392.70, 234,962.94 and 100,342.89 is: 150,754.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,392.70 : 234,962.94 = 100,342.89 : x
  2. Step 2: Convert to fraction form
    156,392.70/234,962.94 = 100,342.89/x
  3. Step 3: Cross multiply
    156,392.70x = 234,962.94 × 100,342.89
  4. Step 4: Simplify right side
    156,392.70x = 23,576,860,442.50
  5. Step 5: Solve for x
    x = 23,576,860,442.50/156,392.70
  6. Step 6: Final answer
    x = 150,754.23

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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.