Home / 128,035.11-192,301.64-104,360.03

Finding the Fourth Proportional to 128,035.11, 192,301.64 and 104,360.03

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Solution

The fourth proportional to 128,035.11, 192,301.64 and 104,360.03 is: 156,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035.11 : 192,301.64 = 104,360.03 : x
  2. Step 2: Convert to fraction form
    128,035.11/192,301.64 = 104,360.03/x
  3. Step 3: Cross multiply
    128,035.11x = 192,301.64 × 104,360.03
  4. Step 4: Simplify right side
    128,035.11x = 20,068,603,436.14
  5. Step 5: Solve for x
    x = 20,068,603,436.14/128,035.11
  6. Step 6: Final answer
    x = 156,742.97

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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.