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Finding the Fourth Proportional to 109,288.90, 163,904.55 and 34,408.90

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Solution

The fourth proportional to 109,288.90, 163,904.55 and 34,408.90 is: 51,604.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,288.90 : 163,904.55 = 34,408.90 : x
  2. Step 2: Convert to fraction form
    109,288.90/163,904.55 = 34,408.90/x
  3. Step 3: Cross multiply
    109,288.90x = 163,904.55 × 34,408.90
  4. Step 4: Simplify right side
    109,288.90x = 5,639,775,270.50
  5. Step 5: Solve for x
    x = 5,639,775,270.50/109,288.90
  6. Step 6: Final answer
    x = 51,604.28

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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.