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Finding the Fourth Proportional to 103,794.31, 155,691.62 and 28,914.67

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Solution

The fourth proportional to 103,794.31, 155,691.62 and 28,914.67 is: 43,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,794.31 : 155,691.62 = 28,914.67 : x
  2. Step 2: Convert to fraction form
    103,794.31/155,691.62 = 28,914.67/x
  3. Step 3: Cross multiply
    103,794.31x = 155,691.62 × 28,914.67
  4. Step 4: Simplify right side
    103,794.31x = 4,501,771,972.54
  5. Step 5: Solve for x
    x = 4,501,771,972.54/103,794.31
  6. Step 6: Final answer
    x = 43,372.05

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1.5x scale

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.