Home / 111,699.27-154,131.26-66,378.15

Finding the Fourth Proportional to 111,699.27, 154,131.26 and 66,378.15

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Solution

The fourth proportional to 111,699.27, 154,131.26 and 66,378.15 is: 91,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,699.27 : 154,131.26 = 66,378.15 : x
  2. Step 2: Convert to fraction form
    111,699.27/154,131.26 = 66,378.15/x
  3. Step 3: Cross multiply
    111,699.27x = 154,131.26 × 66,378.15
  4. Step 4: Simplify right side
    111,699.27x = 10,230,947,564.08
  5. Step 5: Solve for x
    x = 10,230,947,564.08/111,699.27
  6. Step 6: Final answer
    x = 91,593.68

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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.