Home / 189,719.26-261,809.40-103,676.35

Finding the Fourth Proportional to 189,719.26, 261,809.40 and 103,676.35

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Solution

The fourth proportional to 189,719.26, 261,809.40 and 103,676.35 is: 143,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,719.26 : 261,809.40 = 103,676.35 : x
  2. Step 2: Convert to fraction form
    189,719.26/261,809.40 = 103,676.35/x
  3. Step 3: Cross multiply
    189,719.26x = 261,809.40 × 103,676.35
  4. Step 4: Simplify right side
    189,719.26x = 27,143,442,987.69
  5. Step 5: Solve for x
    x = 27,143,442,987.69/189,719.26
  6. Step 6: Final answer
    x = 143,071.63

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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.