Home / 136,722.03-188,676.18-76,289.01

Finding the Fourth Proportional to 136,722.03, 188,676.18 and 76,289.01

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Solution

The fourth proportional to 136,722.03, 188,676.18 and 76,289.01 is: 105,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,722.03 : 188,676.18 = 76,289.01 : x
  2. Step 2: Convert to fraction form
    136,722.03/188,676.18 = 76,289.01/x
  3. Step 3: Cross multiply
    136,722.03x = 188,676.18 × 76,289.01
  4. Step 4: Simplify right side
    136,722.03x = 14,393,918,982.78
  5. Step 5: Solve for x
    x = 14,393,918,982.78/136,722.03
  6. Step 6: Final answer
    x = 105,278.71

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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.