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Finding the Fourth Proportional to 127,991.75, 192,017.79 and 43,752.76

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Solution

The fourth proportional to 127,991.75, 192,017.79 and 43,752.76 is: 65,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,991.75 : 192,017.79 = 43,752.76 : x
  2. Step 2: Convert to fraction form
    127,991.75/192,017.79 = 43,752.76/x
  3. Step 3: Cross multiply
    127,991.75x = 192,017.79 × 43,752.76
  4. Step 4: Simplify right side
    127,991.75x = 8,401,307,801.56
  5. Step 5: Solve for x
    x = 8,401,307,801.56/127,991.75
  6. Step 6: Final answer
    x = 65,639.45

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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.