Home / 112,103.36-154,766-74,429.12

Finding the Fourth Proportional to 112,103.36, 154,766 and 74,429.12

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Solution

The fourth proportional to 112,103.36, 154,766 and 74,429.12 is: 102,754.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.36 : 154,766 = 74,429.12 : x
  2. Step 2: Convert to fraction form
    112,103.36/154,766 = 74,429.12/x
  3. Step 3: Cross multiply
    112,103.36x = 154,766 × 74,429.12
  4. Step 4: Simplify right side
    112,103.36x = 11,519,097,185.92
  5. Step 5: Solve for x
    x = 11,519,097,185.92/112,103.36
  6. Step 6: Final answer
    x = 102,754.25

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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.