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Finding the Fourth Proportional to 103,635.90, 155,453.85 and 37,078.20

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Solution

The fourth proportional to 103,635.90, 155,453.85 and 37,078.20 is: 55,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.90 : 155,453.85 = 37,078.20 : x
  2. Step 2: Convert to fraction form
    103,635.90/155,453.85 = 37,078.20/x
  3. Step 3: Cross multiply
    103,635.90x = 155,453.85 × 37,078.20
  4. Step 4: Simplify right side
    103,635.90x = 5,763,948,941.07
  5. Step 5: Solve for x
    x = 5,763,948,941.07/103,635.90
  6. Step 6: Final answer
    x = 55,617.30

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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.