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Finding the Fourth Proportional to 111,837.97, 154,285.54 and 66,490.22

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Solution

The fourth proportional to 111,837.97, 154,285.54 and 66,490.22 is: 91,726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,837.97 : 154,285.54 = 66,490.22 : x
  2. Step 2: Convert to fraction form
    111,837.97/154,285.54 = 66,490.22/x
  3. Step 3: Cross multiply
    111,837.97x = 154,285.54 × 66,490.22
  4. Step 4: Simplify right side
    111,837.97x = 10,258,479,497.42
  5. Step 5: Solve for x
    x = 10,258,479,497.42/111,837.97
  6. Step 6: Final answer
    x = 91,726.27

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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.