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Finding the Fourth Proportional to 156,642.99, 234,648.46 and 72,285.96

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Solution

The fourth proportional to 156,642.99, 234,648.46 and 72,285.96 is: 108,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,642.99 : 234,648.46 = 72,285.96 : x
  2. Step 2: Convert to fraction form
    156,642.99/234,648.46 = 72,285.96/x
  3. Step 3: Cross multiply
    156,642.99x = 234,648.46 × 72,285.96
  4. Step 4: Simplify right side
    156,642.99x = 16,961,790,163.91
  5. Step 5: Solve for x
    x = 16,961,790,163.91/156,642.99
  6. Step 6: Final answer
    x = 108,283.11

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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.