Home / 101,968.15-140,676.78-75,174.36

Finding the Fourth Proportional to 101,968.15, 140,676.78 and 75,174.36

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Solution

The fourth proportional to 101,968.15, 140,676.78 and 75,174.36 is: 103,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,968.15 : 140,676.78 = 75,174.36 : x
  2. Step 2: Convert to fraction form
    101,968.15/140,676.78 = 75,174.36/x
  3. Step 3: Cross multiply
    101,968.15x = 140,676.78 × 75,174.36
  4. Step 4: Simplify right side
    101,968.15x = 10,575,286,903.36
  5. Step 5: Solve for x
    x = 10,575,286,903.36/101,968.15
  6. Step 6: Final answer
    x = 103,711.67

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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.