Home / 137,084.82-189,098.19-80,485.26

Finding the Fourth Proportional to 137,084.82, 189,098.19 and 80,485.26

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Solution

The fourth proportional to 137,084.82, 189,098.19 and 80,485.26 is: 111,023.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,084.82 : 189,098.19 = 80,485.26 : x
  2. Step 2: Convert to fraction form
    137,084.82/189,098.19 = 80,485.26/x
  3. Step 3: Cross multiply
    137,084.82x = 189,098.19 × 80,485.26
  4. Step 4: Simplify right side
    137,084.82x = 15,219,616,987.68
  5. Step 5: Solve for x
    x = 15,219,616,987.68/137,084.82
  6. Step 6: Final answer
    x = 111,023.36

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1.5x scale

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.