Home / 260,133.72-390,200.73-73,145.22

Finding the Fourth Proportional to 260,133.72, 390,200.73 and 73,145.22

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Solution

The fourth proportional to 260,133.72, 390,200.73 and 73,145.22 is: 109,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,133.72 : 390,200.73 = 73,145.22 : x
  2. Step 2: Convert to fraction form
    260,133.72/390,200.73 = 73,145.22/x
  3. Step 3: Cross multiply
    260,133.72x = 390,200.73 × 73,145.22
  4. Step 4: Simplify right side
    260,133.72x = 28,541,318,240.01
  5. Step 5: Solve for x
    x = 28,541,318,240.01/260,133.72
  6. Step 6: Final answer
    x = 109,717.87

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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.