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Finding the Fourth Proportional to 128,232.48, 192,348.72 and 34,738.20

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Solution

The fourth proportional to 128,232.48, 192,348.72 and 34,738.20 is: 52,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,232.48 : 192,348.72 = 34,738.20 : x
  2. Step 2: Convert to fraction form
    128,232.48/192,348.72 = 34,738.20/x
  3. Step 3: Cross multiply
    128,232.48x = 192,348.72 × 34,738.20
  4. Step 4: Simplify right side
    128,232.48x = 6,681,848,305.10
  5. Step 5: Solve for x
    x = 6,681,848,305.10/128,232.48
  6. Step 6: Final answer
    x = 52,107.30

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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.