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Finding the Fourth Proportional to 103,903.97, 143,384.61 and 58,581.56

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Solution

The fourth proportional to 103,903.97, 143,384.61 and 58,581.56 is: 80,840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,903.97 : 143,384.61 = 58,581.56 : x
  2. Step 2: Convert to fraction form
    103,903.97/143,384.61 = 58,581.56/x
  3. Step 3: Cross multiply
    103,903.97x = 143,384.61 × 58,581.56
  4. Step 4: Simplify right side
    103,903.97x = 8,399,694,133.79
  5. Step 5: Solve for x
    x = 8,399,694,133.79/103,903.97
  6. Step 6: Final answer
    x = 80,840.94

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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.