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Finding the Fourth Proportional to 144,989.46, 200,072.01 and 81,314.94

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Solution

The fourth proportional to 144,989.46, 200,072.01 and 81,314.94 is: 112,207.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,989.46 : 200,072.01 = 81,314.94 : x
  2. Step 2: Convert to fraction form
    144,989.46/200,072.01 = 81,314.94/x
  3. Step 3: Cross multiply
    144,989.46x = 200,072.01 × 81,314.94
  4. Step 4: Simplify right side
    144,989.46x = 16,268,843,488.83
  5. Step 5: Solve for x
    x = 16,268,843,488.83/144,989.46
  6. Step 6: Final answer
    x = 112,207.08

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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.