Home / 128,921.76-193,383.36-58,752

Finding the Fourth Proportional to 128,921.76, 193,383.36 and 58,752

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Solution

The fourth proportional to 128,921.76, 193,383.36 and 58,752 is: 88,128.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,921.76 : 193,383.36 = 58,752 : x
  2. Step 2: Convert to fraction form
    128,921.76/193,383.36 = 58,752/x
  3. Step 3: Cross multiply
    128,921.76x = 193,383.36 × 58,752
  4. Step 4: Simplify right side
    128,921.76x = 11,361,659,166.72
  5. Step 5: Solve for x
    x = 11,361,659,166.72/128,921.76
  6. Step 6: Final answer
    x = 88,128.33

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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.