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Finding the Fourth Proportional to 103,896.60, 143,375.16 and 58,574.64

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Solution

The fourth proportional to 103,896.60, 143,375.16 and 58,574.64 is: 80,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,896.60 : 143,375.16 = 58,574.64 : x
  2. Step 2: Convert to fraction form
    103,896.60/143,375.16 = 58,574.64/x
  3. Step 3: Cross multiply
    103,896.60x = 143,375.16 × 58,574.64
  4. Step 4: Simplify right side
    103,896.60x = 8,398,148,381.94
  5. Step 5: Solve for x
    x = 8,398,148,381.94/103,896.60
  6. Step 6: Final answer
    x = 80,831.79

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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.