Home / 111,836.22-154,391.13-86,285.22

Finding the Fourth Proportional to 111,836.22, 154,391.13 and 86,285.22

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Solution

The fourth proportional to 111,836.22, 154,391.13 and 86,285.22 is: 119,117.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,836.22 : 154,391.13 = 86,285.22 : x
  2. Step 2: Convert to fraction form
    111,836.22/154,391.13 = 86,285.22/x
  3. Step 3: Cross multiply
    111,836.22x = 154,391.13 × 86,285.22
  4. Step 4: Simplify right side
    111,836.22x = 13,321,672,618.10
  5. Step 5: Solve for x
    x = 13,321,672,618.10/111,836.22
  6. Step 6: Final answer
    x = 119,117.69

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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.