Home / 231,970.21-320,103.73-136,458.45

Finding the Fourth Proportional to 231,970.21, 320,103.73 and 136,458.45

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Solution

The fourth proportional to 231,970.21, 320,103.73 and 136,458.45 is: 188,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,970.21 : 320,103.73 = 136,458.45 : x
  2. Step 2: Convert to fraction form
    231,970.21/320,103.73 = 136,458.45/x
  3. Step 3: Cross multiply
    231,970.21x = 320,103.73 × 136,458.45
  4. Step 4: Simplify right side
    231,970.21x = 43,680,858,493.87
  5. Step 5: Solve for x
    x = 43,680,858,493.87/231,970.21
  6. Step 6: Final answer
    x = 188,303.74

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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.