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Finding the Fourth Proportional to 109,331.40, 164,025.90 and 39,203.40

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Solution

The fourth proportional to 109,331.40, 164,025.90 and 39,203.40 is: 58,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,331.40 : 164,025.90 = 39,203.40 : x
  2. Step 2: Convert to fraction form
    109,331.40/164,025.90 = 39,203.40/x
  3. Step 3: Cross multiply
    109,331.40x = 164,025.90 × 39,203.40
  4. Step 4: Simplify right side
    109,331.40x = 6,430,372,968.06
  5. Step 5: Solve for x
    x = 6,430,372,968.06/109,331.40
  6. Step 6: Final answer
    x = 58,815.43

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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.