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Finding the Fourth Proportional to 103,485.92, 155,105.85 and 92,906.30

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Solution

The fourth proportional to 103,485.92, 155,105.85 and 92,906.30 is: 139,249.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,485.92 : 155,105.85 = 92,906.30 : x
  2. Step 2: Convert to fraction form
    103,485.92/155,105.85 = 92,906.30/x
  3. Step 3: Cross multiply
    103,485.92x = 155,105.85 × 92,906.30
  4. Step 4: Simplify right side
    103,485.92x = 14,410,310,631.86
  5. Step 5: Solve for x
    x = 14,410,310,631.86/103,485.92
  6. Step 6: Final answer
    x = 139,249.00

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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.