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Finding the Fourth Proportional to 111,828.72, 154,264.84 and 66,474.44

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Solution

The fourth proportional to 111,828.72, 154,264.84 and 66,474.44 is: 91,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,828.72 : 154,264.84 = 66,474.44 : x
  2. Step 2: Convert to fraction form
    111,828.72/154,264.84 = 66,474.44/x
  3. Step 3: Cross multiply
    111,828.72x = 154,264.84 × 66,474.44
  4. Step 4: Simplify right side
    111,828.72x = 10,254,668,518.32
  5. Step 5: Solve for x
    x = 10,254,668,518.32/111,828.72
  6. Step 6: Final answer
    x = 91,699.78

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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.