Home / 120,421.27-180,533.22-45,498.79

Finding the Fourth Proportional to 120,421.27, 180,533.22 and 45,498.79

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Solution

The fourth proportional to 120,421.27, 180,533.22 and 45,498.79 is: 68,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.27 : 180,533.22 = 45,498.79 : x
  2. Step 2: Convert to fraction form
    120,421.27/180,533.22 = 45,498.79/x
  3. Step 3: Cross multiply
    120,421.27x = 180,533.22 × 45,498.79
  4. Step 4: Simplify right side
    120,421.27x = 8,214,043,064.80
  5. Step 5: Solve for x
    x = 8,214,043,064.80/120,421.27
  6. Step 6: Final answer
    x = 68,210.90

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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.