Home / 211,384.80-317,124.72-71,139.36

Finding the Fourth Proportional to 211,384.80, 317,124.72 and 71,139.36

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Solution

The fourth proportional to 211,384.80, 317,124.72 and 71,139.36 is: 106,725.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,384.80 : 317,124.72 = 71,139.36 : x
  2. Step 2: Convert to fraction form
    211,384.80/317,124.72 = 71,139.36/x
  3. Step 3: Cross multiply
    211,384.80x = 317,124.72 × 71,139.36
  4. Step 4: Simplify right side
    211,384.80x = 22,560,049,620.98
  5. Step 5: Solve for x
    x = 22,560,049,620.98/211,384.80
  6. Step 6: Final answer
    x = 106,725.03

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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.