Home / 112,429.26-154,888.92-78,375.87

Finding the Fourth Proportional to 112,429.26, 154,888.92 and 78,375.87

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Solution

The fourth proportional to 112,429.26, 154,888.92 and 78,375.87 is: 107,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,429.26 : 154,888.92 = 78,375.87 : x
  2. Step 2: Convert to fraction form
    112,429.26/154,888.92 = 78,375.87/x
  3. Step 3: Cross multiply
    112,429.26x = 154,888.92 × 78,375.87
  4. Step 4: Simplify right side
    112,429.26x = 12,139,553,858.36
  5. Step 5: Solve for x
    x = 12,139,553,858.36/112,429.26
  6. Step 6: Final answer
    x = 107,975.04

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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.