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Finding the Fourth Proportional to 121,932.03, 168,323.73 and 91,728.88

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Solution

The fourth proportional to 121,932.03, 168,323.73 and 91,728.88 is: 126,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,932.03 : 168,323.73 = 91,728.88 : x
  2. Step 2: Convert to fraction form
    121,932.03/168,323.73 = 91,728.88/x
  3. Step 3: Cross multiply
    121,932.03x = 168,323.73 × 91,728.88
  4. Step 4: Simplify right side
    121,932.03x = 15,440,147,153.50
  5. Step 5: Solve for x
    x = 15,440,147,153.50/121,932.03
  6. Step 6: Final answer
    x = 126,629.13

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1.5x scale

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.