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Finding the Fourth Proportional to 156,751.62, 216,192.15 and 103,091.73

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Solution

The fourth proportional to 156,751.62, 216,192.15 and 103,091.73 is: 142,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,751.62 : 216,192.15 = 103,091.73 : x
  2. Step 2: Convert to fraction form
    156,751.62/216,192.15 = 103,091.73/x
  3. Step 3: Cross multiply
    156,751.62x = 216,192.15 × 103,091.73
  4. Step 4: Simplify right side
    156,751.62x = 22,287,622,755.92
  5. Step 5: Solve for x
    x = 22,287,622,755.92/156,751.62
  6. Step 6: Final answer
    x = 142,184.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.