Home / 111,837.87-154,285.41-66,490.13

Finding the Fourth Proportional to 111,837.87, 154,285.41 and 66,490.13

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Solution

The fourth proportional to 111,837.87, 154,285.41 and 66,490.13 is: 91,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,837.87 : 154,285.41 = 66,490.13 : x
  2. Step 2: Convert to fraction form
    111,837.87/154,285.41 = 66,490.13/x
  3. Step 3: Cross multiply
    111,837.87x = 154,285.41 × 66,490.13
  4. Step 4: Simplify right side
    111,837.87x = 10,258,456,968.00
  5. Step 5: Solve for x
    x = 10,258,456,968.00/111,837.87
  6. Step 6: Final answer
    x = 91,726.15

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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.