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Finding the Fourth Proportional to 127,361.36, 175,759.47 and 79,642.64

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Solution

The fourth proportional to 127,361.36, 175,759.47 and 79,642.64 is: 109,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,361.36 : 175,759.47 = 79,642.64 : x
  2. Step 2: Convert to fraction form
    127,361.36/175,759.47 = 79,642.64/x
  3. Step 3: Cross multiply
    127,361.36x = 175,759.47 × 79,642.64
  4. Step 4: Simplify right side
    127,361.36x = 13,997,947,317.00
  5. Step 5: Solve for x
    x = 13,997,947,317.00/127,361.36
  6. Step 6: Final answer
    x = 109,907.34

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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.