Home / 260,109.14-390,163.71-73,120.64

Finding the Fourth Proportional to 260,109.14, 390,163.71 and 73,120.64

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Solution

The fourth proportional to 260,109.14, 390,163.71 and 73,120.64 is: 109,680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,109.14 : 390,163.71 = 73,120.64 : x
  2. Step 2: Convert to fraction form
    260,109.14/390,163.71 = 73,120.64/x
  3. Step 3: Cross multiply
    260,109.14x = 390,163.71 × 73,120.64
  4. Step 4: Simplify right side
    260,109.14x = 28,529,020,179.97
  5. Step 5: Solve for x
    x = 28,529,020,179.97/260,109.14
  6. Step 6: Final answer
    x = 109,680.96

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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.