Home / 148,383.36-204,768-81,313.92

Finding the Fourth Proportional to 148,383.36, 204,768 and 81,313.92

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Solution

The fourth proportional to 148,383.36, 204,768 and 81,313.92 is: 112,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,383.36 : 204,768 = 81,313.92 : x
  2. Step 2: Convert to fraction form
    148,383.36/204,768 = 81,313.92/x
  3. Step 3: Cross multiply
    148,383.36x = 204,768 × 81,313.92
  4. Step 4: Simplify right side
    148,383.36x = 16,650,488,770.56
  5. Step 5: Solve for x
    x = 16,650,488,770.56/148,383.36
  6. Step 6: Final answer
    x = 112,212.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.