Home / 111,845.31-154,287.71-66,491.04

Finding the Fourth Proportional to 111,845.31, 154,287.71 and 66,491.04

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Solution

The fourth proportional to 111,845.31, 154,287.71 and 66,491.04 is: 91,722.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,845.31 : 154,287.71 = 66,491.04 : x
  2. Step 2: Convert to fraction form
    111,845.31/154,287.71 = 66,491.04/x
  3. Step 3: Cross multiply
    111,845.31x = 154,287.71 × 66,491.04
  4. Step 4: Simplify right side
    111,845.31x = 10,258,749,525.68
  5. Step 5: Solve for x
    x = 10,258,749,525.68/111,845.31
  6. Step 6: Final answer
    x = 91,722.66

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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.