Home / 137,972.52-190,368.81-80,579.26

Finding the Fourth Proportional to 137,972.52, 190,368.81 and 80,579.26

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Solution

The fourth proportional to 137,972.52, 190,368.81 and 80,579.26 is: 111,179.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,972.52 : 190,368.81 = 80,579.26 : x
  2. Step 2: Convert to fraction form
    137,972.52/190,368.81 = 80,579.26/x
  3. Step 3: Cross multiply
    137,972.52x = 190,368.81 × 80,579.26
  4. Step 4: Simplify right side
    137,972.52x = 15,339,777,360.96
  5. Step 5: Solve for x
    x = 15,339,777,360.96/137,972.52
  6. Step 6: Final answer
    x = 111,179.95

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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.