Home / 211,455.90-317,307.69-85,076.46

Finding the Fourth Proportional to 211,455.90, 317,307.69 and 85,076.46

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Solution

The fourth proportional to 211,455.90, 317,307.69 and 85,076.46 is: 127,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,455.90 : 317,307.69 = 85,076.46 : x
  2. Step 2: Convert to fraction form
    211,455.90/317,307.69 = 85,076.46/x
  3. Step 3: Cross multiply
    211,455.90x = 317,307.69 × 85,076.46
  4. Step 4: Simplify right side
    211,455.90x = 26,995,414,995.98
  5. Step 5: Solve for x
    x = 26,995,414,995.98/211,455.90
  6. Step 6: Final answer
    x = 127,664.52

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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.