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Finding the Fourth Proportional to 103,494.10, 155,241.15 and 68,064.70

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Solution

The fourth proportional to 103,494.10, 155,241.15 and 68,064.70 is: 102,097.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,494.10 : 155,241.15 = 68,064.70 : x
  2. Step 2: Convert to fraction form
    103,494.10/155,241.15 = 68,064.70/x
  3. Step 3: Cross multiply
    103,494.10x = 155,241.15 × 68,064.70
  4. Step 4: Simplify right side
    103,494.10x = 10,566,442,302.41
  5. Step 5: Solve for x
    x = 10,566,442,302.41/103,494.10
  6. Step 6: Final answer
    x = 102,097.05

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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.