Home / 137,968.51-190,448.58-80,626.51

Finding the Fourth Proportional to 137,968.51, 190,448.58 and 80,626.51

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Solution

The fourth proportional to 137,968.51, 190,448.58 and 80,626.51 is: 111,294.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,968.51 : 190,448.58 = 80,626.51 : x
  2. Step 2: Convert to fraction form
    137,968.51/190,448.58 = 80,626.51/x
  3. Step 3: Cross multiply
    137,968.51x = 190,448.58 × 80,626.51
  4. Step 4: Simplify right side
    137,968.51x = 15,355,203,936.72
  5. Step 5: Solve for x
    x = 15,355,203,936.72/137,968.51
  6. Step 6: Final answer
    x = 111,294.99

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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.