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Finding the Fourth Proportional to 158,380.32, 218,464.16 and 103,936.02

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Solution

The fourth proportional to 158,380.32, 218,464.16 and 103,936.02 is: 143,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,380.32 : 218,464.16 = 103,936.02 : x
  2. Step 2: Convert to fraction form
    158,380.32/218,464.16 = 103,936.02/x
  3. Step 3: Cross multiply
    158,380.32x = 218,464.16 × 103,936.02
  4. Step 4: Simplify right side
    158,380.32x = 22,706,294,783.36
  5. Step 5: Solve for x
    x = 22,706,294,783.36/158,380.32
  6. Step 6: Final answer
    x = 143,365.63

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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.