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Finding the Fourth Proportional to 128,369.72, 192,394.14 and 61,797.44

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Solution

The fourth proportional to 128,369.72, 192,394.14 and 61,797.44 is: 92,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,369.72 : 192,394.14 = 61,797.44 : x
  2. Step 2: Convert to fraction form
    128,369.72/192,394.14 = 61,797.44/x
  3. Step 3: Cross multiply
    128,369.72x = 192,394.14 × 61,797.44
  4. Step 4: Simplify right side
    128,369.72x = 11,889,465,323.00
  5. Step 5: Solve for x
    x = 11,889,465,323.00/128,369.72
  6. Step 6: Final answer
    x = 92,618.92

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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.