Home / 111,786.36-154,328.94-74,111.64

Finding the Fourth Proportional to 111,786.36, 154,328.94 and 74,111.64

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Solution

The fourth proportional to 111,786.36, 154,328.94 and 74,111.64 is: 102,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,786.36 : 154,328.94 = 74,111.64 : x
  2. Step 2: Convert to fraction form
    111,786.36/154,328.94 = 74,111.64/x
  3. Step 3: Cross multiply
    111,786.36x = 154,328.94 × 74,111.64
  4. Step 4: Simplify right side
    111,786.36x = 11,437,570,842.86
  5. Step 5: Solve for x
    x = 11,437,570,842.86/111,786.36
  6. Step 6: Final answer
    x = 102,316.34

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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.