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Finding the Fourth Proportional to 111,409.30, 153,744.92 and 60,422.02

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Solution

The fourth proportional to 111,409.30, 153,744.92 and 60,422.02 is: 83,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,409.30 : 153,744.92 = 60,422.02 : x
  2. Step 2: Convert to fraction form
    111,409.30/153,744.92 = 60,422.02/x
  3. Step 3: Cross multiply
    111,409.30x = 153,744.92 × 60,422.02
  4. Step 4: Simplify right side
    111,409.30x = 9,289,578,171.25
  5. Step 5: Solve for x
    x = 9,289,578,171.25/111,409.30
  6. Step 6: Final answer
    x = 83,382.43

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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.