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Finding the Fourth Proportional to 103,773.10, 155,659.65 and 68,343.70

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Solution

The fourth proportional to 103,773.10, 155,659.65 and 68,343.70 is: 102,515.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,773.10 : 155,659.65 = 68,343.70 : x
  2. Step 2: Convert to fraction form
    103,773.10/155,659.65 = 68,343.70/x
  3. Step 3: Cross multiply
    103,773.10x = 155,659.65 × 68,343.70
  4. Step 4: Simplify right side
    103,773.10x = 10,638,356,421.71
  5. Step 5: Solve for x
    x = 10,638,356,421.71/103,773.10
  6. Step 6: Final answer
    x = 102,515.55

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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.