Home / 112,166.78-154,789.44-61,865.78

Finding the Fourth Proportional to 112,166.78, 154,789.44 and 61,865.78

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Solution

The fourth proportional to 112,166.78, 154,789.44 and 61,865.78 is: 85,374.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,166.78 : 154,789.44 = 61,865.78 : x
  2. Step 2: Convert to fraction form
    112,166.78/154,789.44 = 61,865.78/x
  3. Step 3: Cross multiply
    112,166.78x = 154,789.44 × 61,865.78
  4. Step 4: Simplify right side
    112,166.78x = 9,576,169,441.36
  5. Step 5: Solve for x
    x = 9,576,169,441.36/112,166.78
  6. Step 6: Final answer
    x = 85,374.38

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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.