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Finding the Fourth Proportional to 144,679.56, 199,674.84 and 81,005.04

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Solution

The fourth proportional to 144,679.56, 199,674.84 and 81,005.04 is: 111,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,679.56 : 199,674.84 = 81,005.04 : x
  2. Step 2: Convert to fraction form
    144,679.56/199,674.84 = 81,005.04/x
  3. Step 3: Cross multiply
    144,679.56x = 199,674.84 × 81,005.04
  4. Step 4: Simplify right side
    144,679.56x = 16,174,668,401.19
  5. Step 5: Solve for x
    x = 16,174,668,401.19/144,679.56
  6. Step 6: Final answer
    x = 111,796.50

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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.