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Finding the Fourth Proportional to 128,055.87, 192,113.98 and 43,816.95

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Solution

The fourth proportional to 128,055.87, 192,113.98 and 43,816.95 is: 65,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,055.87 : 192,113.98 = 43,816.95 : x
  2. Step 2: Convert to fraction form
    128,055.87/192,113.98 = 43,816.95/x
  3. Step 3: Cross multiply
    128,055.87x = 192,113.98 × 43,816.95
  4. Step 4: Simplify right side
    128,055.87x = 8,417,848,546.42
  5. Step 5: Solve for x
    x = 8,417,848,546.42/128,055.87
  6. Step 6: Final answer
    x = 65,735.75

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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.