Home / 144,796.12-199,816.14-81,133.72

Finding the Fourth Proportional to 144,796.12, 199,816.14 and 81,133.72

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Solution

The fourth proportional to 144,796.12, 199,816.14 and 81,133.72 is: 111,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,796.12 : 199,816.14 = 81,133.72 : x
  2. Step 2: Convert to fraction form
    144,796.12/199,816.14 = 81,133.72/x
  3. Step 3: Cross multiply
    144,796.12x = 199,816.14 × 81,133.72
  4. Step 4: Simplify right side
    144,796.12x = 16,211,826,754.24
  5. Step 5: Solve for x
    x = 16,211,826,754.24/144,796.12
  6. Step 6: Final answer
    x = 111,963.13

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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.