Home / 109,629.60-151,318.09-61,910.88

Finding the Fourth Proportional to 109,629.60, 151,318.09 and 61,910.88

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Solution

The fourth proportional to 109,629.60, 151,318.09 and 61,910.88 is: 85,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,629.60 : 151,318.09 = 61,910.88 : x
  2. Step 2: Convert to fraction form
    109,629.60/151,318.09 = 61,910.88/x
  3. Step 3: Cross multiply
    109,629.60x = 151,318.09 × 61,910.88
  4. Step 4: Simplify right side
    109,629.60x = 9,368,236,111.82
  5. Step 5: Solve for x
    x = 9,368,236,111.82/109,629.60
  6. Step 6: Final answer
    x = 85,453.53

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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.