Home / 220,162.10-330,139.05-85,289.34

Finding the Fourth Proportional to 220,162.10, 330,139.05 and 85,289.34

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Solution

The fourth proportional to 220,162.10, 330,139.05 and 85,289.34 is: 127,893.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,162.10 : 330,139.05 = 85,289.34 : x
  2. Step 2: Convert to fraction form
    220,162.10/330,139.05 = 85,289.34/x
  3. Step 3: Cross multiply
    220,162.10x = 330,139.05 × 85,289.34
  4. Step 4: Simplify right side
    220,162.10x = 28,157,341,682.73
  5. Step 5: Solve for x
    x = 28,157,341,682.73/220,162.10
  6. Step 6: Final answer
    x = 127,893.68

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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.