Home / 128,121.15-192,181.73-121,232.10

Finding the Fourth Proportional to 128,121.15, 192,181.73 and 121,232.10

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Solution

The fourth proportional to 128,121.15, 192,181.73 and 121,232.10 is: 181,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,121.15 : 192,181.73 = 121,232.10 : x
  2. Step 2: Convert to fraction form
    128,121.15/192,181.73 = 121,232.10/x
  3. Step 3: Cross multiply
    128,121.15x = 192,181.73 × 121,232.10
  4. Step 4: Simplify right side
    128,121.15x = 23,298,594,103.37
  5. Step 5: Solve for x
    x = 23,298,594,103.37/128,121.15
  6. Step 6: Final answer
    x = 181,848.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.