Home / 129,740.19-194,636.54-54,860.21

Finding the Fourth Proportional to 129,740.19, 194,636.54 and 54,860.21

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Solution

The fourth proportional to 129,740.19, 194,636.54 and 54,860.21 is: 82,301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.19 : 194,636.54 = 54,860.21 : x
  2. Step 2: Convert to fraction form
    129,740.19/194,636.54 = 54,860.21/x
  3. Step 3: Cross multiply
    129,740.19x = 194,636.54 × 54,860.21
  4. Step 4: Simplify right side
    129,740.19x = 10,677,802,081.82
  5. Step 5: Solve for x
    x = 10,677,802,081.82/129,740.19
  6. Step 6: Final answer
    x = 82,301.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.