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Finding the Fourth Proportional to 103,362.21, 155,057.90 and 36,782.64

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Solution

The fourth proportional to 103,362.21, 155,057.90 and 36,782.64 is: 55,179.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,362.21 : 155,057.90 = 36,782.64 : x
  2. Step 2: Convert to fraction form
    103,362.21/155,057.90 = 36,782.64/x
  3. Step 3: Cross multiply
    103,362.21x = 155,057.90 × 36,782.64
  4. Step 4: Simplify right side
    103,362.21x = 5,703,438,730.94
  5. Step 5: Solve for x
    x = 5,703,438,730.94/103,362.21
  6. Step 6: Final answer
    x = 55,179.15

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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.