Home / 137,619.90-189,739.62-89,136.14

Finding the Fourth Proportional to 137,619.90, 189,739.62 and 89,136.14

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Solution

The fourth proportional to 137,619.90, 189,739.62 and 89,136.14 is: 122,893.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619.90 : 189,739.62 = 89,136.14 : x
  2. Step 2: Convert to fraction form
    137,619.90/189,739.62 = 89,136.14/x
  3. Step 3: Cross multiply
    137,619.90x = 189,739.62 × 89,136.14
  4. Step 4: Simplify right side
    137,619.90x = 16,912,656,383.17
  5. Step 5: Solve for x
    x = 16,912,656,383.17/137,619.90
  6. Step 6: Final answer
    x = 122,893.97

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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.