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Finding the Fourth Proportional to 128,252.97, 192,379.46 and 34,758.72

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Solution

The fourth proportional to 128,252.97, 192,379.46 and 34,758.72 is: 52,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,252.97 : 192,379.46 = 34,758.72 : x
  2. Step 2: Convert to fraction form
    128,252.97/192,379.46 = 34,758.72/x
  3. Step 3: Cross multiply
    128,252.97x = 192,379.46 × 34,758.72
  4. Step 4: Simplify right side
    128,252.97x = 6,686,863,610.10
  5. Step 5: Solve for x
    x = 6,686,863,610.10/128,252.97
  6. Step 6: Final answer
    x = 52,138.08

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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.