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Finding the Fourth Proportional to 144,967.92, 200,065.71 and 81,309.81

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Solution

The fourth proportional to 144,967.92, 200,065.71 and 81,309.81 is: 112,213.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,967.92 : 200,065.71 = 81,309.81 : x
  2. Step 2: Convert to fraction form
    144,967.92/200,065.71 = 81,309.81/x
  3. Step 3: Cross multiply
    144,967.92x = 200,065.71 × 81,309.81
  4. Step 4: Simplify right side
    144,967.92x = 16,267,304,867.62
  5. Step 5: Solve for x
    x = 16,267,304,867.62/144,967.92
  6. Step 6: Final answer
    x = 112,213.14

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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.