Home / 189,381.09-261,347.04-103,339.11

Finding the Fourth Proportional to 189,381.09, 261,347.04 and 103,339.11

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Solution

The fourth proportional to 189,381.09, 261,347.04 and 103,339.11 is: 142,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,381.09 : 261,347.04 = 103,339.11 : x
  2. Step 2: Convert to fraction form
    189,381.09/261,347.04 = 103,339.11/x
  3. Step 3: Cross multiply
    189,381.09x = 261,347.04 × 103,339.11
  4. Step 4: Simplify right side
    189,381.09x = 27,007,370,514.73
  5. Step 5: Solve for x
    x = 27,007,370,514.73/189,381.09
  6. Step 6: Final answer
    x = 142,608.59

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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.