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Finding the Fourth Proportional to 109,940.10, 164,910.15 and 103,379.10

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Solution

The fourth proportional to 109,940.10, 164,910.15 and 103,379.10 is: 155,068.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.10 : 164,910.15 = 103,379.10 : x
  2. Step 2: Convert to fraction form
    109,940.10/164,910.15 = 103,379.10/x
  3. Step 3: Cross multiply
    109,940.10x = 164,910.15 × 103,379.10
  4. Step 4: Simplify right side
    109,940.10x = 17,048,262,887.87
  5. Step 5: Solve for x
    x = 17,048,262,887.87/109,940.10
  6. Step 6: Final answer
    x = 155,068.65

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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.