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Finding the Fourth Proportional to 126,707.79, 174,839.44 and 75,709.75

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Solution

The fourth proportional to 126,707.79, 174,839.44 and 75,709.75 is: 104,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,707.79 : 174,839.44 = 75,709.75 : x
  2. Step 2: Convert to fraction form
    126,707.79/174,839.44 = 75,709.75/x
  3. Step 3: Cross multiply
    126,707.79x = 174,839.44 × 75,709.75
  4. Step 4: Simplify right side
    126,707.79x = 13,237,049,913.99
  5. Step 5: Solve for x
    x = 13,237,049,913.99/126,707.79
  6. Step 6: Final answer
    x = 104,469.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.