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Finding the Fourth Proportional to 104,203.87, 156,305.81 and 69,211.87

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Solution

The fourth proportional to 104,203.87, 156,305.81 and 69,211.87 is: 103,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,203.87 : 156,305.81 = 69,211.87 : x
  2. Step 2: Convert to fraction form
    104,203.87/156,305.81 = 69,211.87/x
  3. Step 3: Cross multiply
    104,203.87x = 156,305.81 × 69,211.87
  4. Step 4: Simplify right side
    104,203.87x = 10,818,217,055.91
  5. Step 5: Solve for x
    x = 10,818,217,055.91/104,203.87
  6. Step 6: Final answer
    x = 103,817.81

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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.