Home / 120,519.60-166,321.36-72,763.68

Finding the Fourth Proportional to 120,519.60, 166,321.36 and 72,763.68

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Solution

The fourth proportional to 120,519.60, 166,321.36 and 72,763.68 is: 100,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,519.60 : 166,321.36 = 72,763.68 : x
  2. Step 2: Convert to fraction form
    120,519.60/166,321.36 = 72,763.68/x
  3. Step 3: Cross multiply
    120,519.60x = 166,321.36 × 72,763.68
  4. Step 4: Simplify right side
    120,519.60x = 12,102,154,216.20
  5. Step 5: Solve for x
    x = 12,102,154,216.20/120,519.60
  6. Step 6: Final answer
    x = 100,416.48

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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.