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Finding the Fourth Proportional to 104,600.34, 156,812.35 and 45,391.42

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Solution

The fourth proportional to 104,600.34, 156,812.35 and 45,391.42 is: 68,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,600.34 : 156,812.35 = 45,391.42 : x
  2. Step 2: Convert to fraction form
    104,600.34/156,812.35 = 45,391.42/x
  3. Step 3: Cross multiply
    104,600.34x = 156,812.35 × 45,391.42
  4. Step 4: Simplify right side
    104,600.34x = 7,117,935,240.04
  5. Step 5: Solve for x
    x = 7,117,935,240.04/104,600.34
  6. Step 6: Final answer
    x = 68,048.87

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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.