Home / 137,968.12-190,448.02-80,626.06

Finding the Fourth Proportional to 137,968.12, 190,448.02 and 80,626.06

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Solution

The fourth proportional to 137,968.12, 190,448.02 and 80,626.06 is: 111,294.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,968.12 : 190,448.02 = 80,626.06 : x
  2. Step 2: Convert to fraction form
    137,968.12/190,448.02 = 80,626.06/x
  3. Step 3: Cross multiply
    137,968.12x = 190,448.02 × 80,626.06
  4. Step 4: Simplify right side
    137,968.12x = 15,355,073,487.40
  5. Step 5: Solve for x
    x = 15,355,073,487.40/137,968.12
  6. Step 6: Final answer
    x = 111,294.36

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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.