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Finding the Fourth Proportional to 104,048.70, 156,145.95 and 66,699.60

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Solution

The fourth proportional to 104,048.70, 156,145.95 and 66,699.60 is: 100,096.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,048.70 : 156,145.95 = 66,699.60 : x
  2. Step 2: Convert to fraction form
    104,048.70/156,145.95 = 66,699.60/x
  3. Step 3: Cross multiply
    104,048.70x = 156,145.95 × 66,699.60
  4. Step 4: Simplify right side
    104,048.70x = 10,414,872,406.62
  5. Step 5: Solve for x
    x = 10,414,872,406.62/104,048.70
  6. Step 6: Final answer
    x = 100,096.13

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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.