Home / 128,194.32-192,030.36-104,586

Finding the Fourth Proportional to 128,194.32, 192,030.36 and 104,586

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Solution

The fourth proportional to 128,194.32, 192,030.36 and 104,586 is: 156,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,194.32 : 192,030.36 = 104,586 : x
  2. Step 2: Convert to fraction form
    128,194.32/192,030.36 = 104,586/x
  3. Step 3: Cross multiply
    128,194.32x = 192,030.36 × 104,586
  4. Step 4: Simplify right side
    128,194.32x = 20,083,687,230.96
  5. Step 5: Solve for x
    x = 20,083,687,230.96/128,194.32
  6. Step 6: Final answer
    x = 156,665.97

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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.