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Finding the Fourth Proportional to 128,277.30, 192,087.90 and 94,816.20

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Solution

The fourth proportional to 128,277.30, 192,087.90 and 94,816.20 is: 141,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,277.30 : 192,087.90 = 94,816.20 : x
  2. Step 2: Convert to fraction form
    128,277.30/192,087.90 = 94,816.20/x
  3. Step 3: Cross multiply
    128,277.30x = 192,087.90 × 94,816.20
  4. Step 4: Simplify right side
    128,277.30x = 18,213,044,743.98
  5. Step 5: Solve for x
    x = 18,213,044,743.98/128,277.30
  6. Step 6: Final answer
    x = 141,981.82

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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.