Home / 138,269.07-190,825.61-84,589.79

Finding the Fourth Proportional to 138,269.07, 190,825.61 and 84,589.79

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Solution

The fourth proportional to 138,269.07, 190,825.61 and 84,589.79 is: 116,742.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,269.07 : 190,825.61 = 84,589.79 : x
  2. Step 2: Convert to fraction form
    138,269.07/190,825.61 = 84,589.79/x
  3. Step 3: Cross multiply
    138,269.07x = 190,825.61 × 84,589.79
  4. Step 4: Simplify right side
    138,269.07x = 16,141,896,899.44
  5. Step 5: Solve for x
    x = 16,141,896,899.44/138,269.07
  6. Step 6: Final answer
    x = 116,742.64

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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.