Home / 260,111.20-390,166.80-73,122.70

Finding the Fourth Proportional to 260,111.20, 390,166.80 and 73,122.70

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Solution

The fourth proportional to 260,111.20, 390,166.80 and 73,122.70 is: 109,684.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.20 : 390,166.80 = 73,122.70 : x
  2. Step 2: Convert to fraction form
    260,111.20/390,166.80 = 73,122.70/x
  3. Step 3: Cross multiply
    260,111.20x = 390,166.80 × 73,122.70
  4. Step 4: Simplify right side
    260,111.20x = 28,530,048,890.94
  5. Step 5: Solve for x
    x = 28,530,048,890.94/260,111.20
  6. Step 6: Final answer
    x = 109,684.05

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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.