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Finding the Fourth Proportional to 103,504.70, 155,217.62 and 67,956.50

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Solution

The fourth proportional to 103,504.70, 155,217.62 and 67,956.50 is: 101,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,504.70 : 155,217.62 = 67,956.50 : x
  2. Step 2: Convert to fraction form
    103,504.70/155,217.62 = 67,956.50/x
  3. Step 3: Cross multiply
    103,504.70x = 155,217.62 × 67,956.50
  4. Step 4: Simplify right side
    103,504.70x = 10,548,045,077.66
  5. Step 5: Solve for x
    x = 10,548,045,077.66/103,504.70
  6. Step 6: Final answer
    x = 101,908.86

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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.