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Finding the Fourth Proportional to 128,006.82, 192,032.76 and 43,747.18

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Solution

The fourth proportional to 128,006.82, 192,032.76 and 43,747.18 is: 65,628.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,006.82 : 192,032.76 = 43,747.18 : x
  2. Step 2: Convert to fraction form
    128,006.82/192,032.76 = 43,747.18/x
  3. Step 3: Cross multiply
    128,006.82x = 192,032.76 × 43,747.18
  4. Step 4: Simplify right side
    128,006.82x = 8,400,891,717.62
  5. Step 5: Solve for x
    x = 8,400,891,717.62/128,006.82
  6. Step 6: Final answer
    x = 65,628.47

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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.