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Finding the Fourth Proportional to 103,203.64, 154,805.60 and 28,324.81

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Solution

The fourth proportional to 103,203.64, 154,805.60 and 28,324.81 is: 42,487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,203.64 : 154,805.60 = 28,324.81 : x
  2. Step 2: Convert to fraction form
    103,203.64/154,805.60 = 28,324.81/x
  3. Step 3: Cross multiply
    103,203.64x = 154,805.60 × 28,324.81
  4. Step 4: Simplify right side
    103,203.64x = 4,384,839,206.94
  5. Step 5: Solve for x
    x = 4,384,839,206.94/103,203.64
  6. Step 6: Final answer
    x = 42,487.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.