Home / 128,835.36-193,032.72-100,744.56

Finding the Fourth Proportional to 128,835.36, 193,032.72 and 100,744.56

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Solution

The fourth proportional to 128,835.36, 193,032.72 and 100,744.56 is: 150,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,835.36 : 193,032.72 = 100,744.56 : x
  2. Step 2: Convert to fraction form
    128,835.36/193,032.72 = 100,744.56/x
  3. Step 3: Cross multiply
    128,835.36x = 193,032.72 × 100,744.56
  4. Step 4: Simplify right side
    128,835.36x = 19,446,996,442.00
  5. Step 5: Solve for x
    x = 19,446,996,442.00/128,835.36
  6. Step 6: Final answer
    x = 150,944.56

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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.