Home / 212,386.26-318,628.66-72,145.02

Finding the Fourth Proportional to 212,386.26, 318,628.66 and 72,145.02

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Solution

The fourth proportional to 212,386.26, 318,628.66 and 72,145.02 is: 108,234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,386.26 : 318,628.66 = 72,145.02 : x
  2. Step 2: Convert to fraction form
    212,386.26/318,628.66 = 72,145.02/x
  3. Step 3: Cross multiply
    212,386.26x = 318,628.66 × 72,145.02
  4. Step 4: Simplify right side
    212,386.26x = 22,987,471,048.27
  5. Step 5: Solve for x
    x = 22,987,471,048.27/212,386.26
  6. Step 6: Final answer
    x = 108,234.27

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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.