Home / 120,023.20-165,632.40-66,311.20

Finding the Fourth Proportional to 120,023.20, 165,632.40 and 66,311.20

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Solution

The fourth proportional to 120,023.20, 165,632.40 and 66,311.20 is: 91,509.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,023.20 : 165,632.40 = 66,311.20 : x
  2. Step 2: Convert to fraction form
    120,023.20/165,632.40 = 66,311.20/x
  3. Step 3: Cross multiply
    120,023.20x = 165,632.40 × 66,311.20
  4. Step 4: Simplify right side
    120,023.20x = 10,983,283,202.88
  5. Step 5: Solve for x
    x = 10,983,283,202.88/120,023.20
  6. Step 6: Final answer
    x = 91,509.67

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1.5x scale

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.