Home / 112,365.44-154,980.24-78,375.68

Finding the Fourth Proportional to 112,365.44, 154,980.24 and 78,375.68

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Solution

The fourth proportional to 112,365.44, 154,980.24 and 78,375.68 is: 108,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,365.44 : 154,980.24 = 78,375.68 : x
  2. Step 2: Convert to fraction form
    112,365.44/154,980.24 = 78,375.68/x
  3. Step 3: Cross multiply
    112,365.44x = 154,980.24 × 78,375.68
  4. Step 4: Simplify right side
    112,365.44x = 12,146,681,696.56
  5. Step 5: Solve for x
    x = 12,146,681,696.56/112,365.44
  6. Step 6: Final answer
    x = 108,099.80

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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.