Home / 211,820.16-317,161.92-111,772.80

Finding the Fourth Proportional to 211,820.16, 317,161.92 and 111,772.80

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Solution

The fourth proportional to 211,820.16, 317,161.92 and 111,772.80 is: 167,359.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,820.16 : 317,161.92 = 111,772.80 : x
  2. Step 2: Convert to fraction form
    211,820.16/317,161.92 = 111,772.80/x
  3. Step 3: Cross multiply
    211,820.16x = 317,161.92 × 111,772.80
  4. Step 4: Simplify right side
    211,820.16x = 35,450,075,851.78
  5. Step 5: Solve for x
    x = 35,450,075,851.78/211,820.16
  6. Step 6: Final answer
    x = 167,359.31

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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.