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Finding the Fourth Proportional to 109,317.40, 164,004.90 and 39,189.40

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Solution

The fourth proportional to 109,317.40, 164,004.90 and 39,189.40 is: 58,794.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,317.40 : 164,004.90 = 39,189.40 : x
  2. Step 2: Convert to fraction form
    109,317.40/164,004.90 = 39,189.40/x
  3. Step 3: Cross multiply
    109,317.40x = 164,004.90 × 39,189.40
  4. Step 4: Simplify right side
    109,317.40x = 6,427,253,628.06
  5. Step 5: Solve for x
    x = 6,427,253,628.06/109,317.40
  6. Step 6: Final answer
    x = 58,794.42

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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.