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Finding the Fourth Proportional to 144,901.44, 199,963.98 and 81,239.22

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Solution

The fourth proportional to 144,901.44, 199,963.98 and 81,239.22 is: 112,110.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,901.44 : 199,963.98 = 81,239.22 : x
  2. Step 2: Convert to fraction form
    144,901.44/199,963.98 = 81,239.22/x
  3. Step 3: Cross multiply
    144,901.44x = 199,963.98 × 81,239.22
  4. Step 4: Simplify right side
    144,901.44x = 16,244,917,763.30
  5. Step 5: Solve for x
    x = 16,244,917,763.30/144,901.44
  6. Step 6: Final answer
    x = 112,110.12

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1.5x scale

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.