Home / 137,793.24-190,202.64-81,201

Finding the Fourth Proportional to 137,793.24, 190,202.64 and 81,201

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Solution

The fourth proportional to 137,793.24, 190,202.64 and 81,201 is: 112,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,793.24 : 190,202.64 = 81,201 : x
  2. Step 2: Convert to fraction form
    137,793.24/190,202.64 = 81,201/x
  3. Step 3: Cross multiply
    137,793.24x = 190,202.64 × 81,201
  4. Step 4: Simplify right side
    137,793.24x = 15,444,644,570.64
  5. Step 5: Solve for x
    x = 15,444,644,570.64/137,793.24
  6. Step 6: Final answer
    x = 112,085.65

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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.