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Finding the Fourth Proportional to 128,464.34, 192,751.61 and 49,633.92

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Solution

The fourth proportional to 128,464.34, 192,751.61 and 49,633.92 is: 74,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,464.34 : 192,751.61 = 49,633.92 : x
  2. Step 2: Convert to fraction form
    128,464.34/192,751.61 = 49,633.92/x
  3. Step 3: Cross multiply
    128,464.34x = 192,751.61 × 49,633.92
  4. Step 4: Simplify right side
    128,464.34x = 9,567,017,742.44
  5. Step 5: Solve for x
    x = 9,567,017,742.44/128,464.34
  6. Step 6: Final answer
    x = 74,472.17

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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.