Home / 137,768.36-190,097.70-81,172.04

Finding the Fourth Proportional to 137,768.36, 190,097.70 and 81,172.04

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Solution

The fourth proportional to 137,768.36, 190,097.70 and 81,172.04 is: 112,004.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,768.36 : 190,097.70 = 81,172.04 : x
  2. Step 2: Convert to fraction form
    137,768.36/190,097.70 = 81,172.04/x
  3. Step 3: Cross multiply
    137,768.36x = 190,097.70 × 81,172.04
  4. Step 4: Simplify right side
    137,768.36x = 15,430,618,108.31
  5. Step 5: Solve for x
    x = 15,430,618,108.31/137,768.36
  6. Step 6: Final answer
    x = 112,004.08

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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.