Home / 130,987.40-196,500.94-66,910.36

Finding the Fourth Proportional to 130,987.40, 196,500.94 and 66,910.36

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Solution

The fourth proportional to 130,987.40, 196,500.94 and 66,910.36 is: 100,375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,987.40 : 196,500.94 = 66,910.36 : x
  2. Step 2: Convert to fraction form
    130,987.40/196,500.94 = 66,910.36/x
  3. Step 3: Cross multiply
    130,987.40x = 196,500.94 × 66,910.36
  4. Step 4: Simplify right side
    130,987.40x = 13,147,948,635.74
  5. Step 5: Solve for x
    x = 13,147,948,635.74/130,987.40
  6. Step 6: Final answer
    x = 100,375.67

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1.5x scale

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.