Home / 211,511.03-317,100.13-104,821.64

Finding the Fourth Proportional to 211,511.03, 317,100.13 and 104,821.64

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Solution

The fourth proportional to 211,511.03, 317,100.13 and 104,821.64 is: 157,149.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,511.03 : 317,100.13 = 104,821.64 : x
  2. Step 2: Convert to fraction form
    211,511.03/317,100.13 = 104,821.64/x
  3. Step 3: Cross multiply
    211,511.03x = 317,100.13 × 104,821.64
  4. Step 4: Simplify right side
    211,511.03x = 33,238,953,823.26
  5. Step 5: Solve for x
    x = 33,238,953,823.26/211,511.03
  6. Step 6: Final answer
    x = 157,149.98

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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.