Home / 211,386.16-317,128.04-71,141.36

Finding the Fourth Proportional to 211,386.16, 317,128.04 and 71,141.36

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Solution

The fourth proportional to 211,386.16, 317,128.04 and 71,141.36 is: 106,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,386.16 : 317,128.04 = 71,141.36 : x
  2. Step 2: Convert to fraction form
    211,386.16/317,128.04 = 71,141.36/x
  3. Step 3: Cross multiply
    211,386.16x = 317,128.04 × 71,141.36
  4. Step 4: Simplify right side
    211,386.16x = 22,560,920,059.73
  5. Step 5: Solve for x
    x = 22,560,920,059.73/211,386.16
  6. Step 6: Final answer
    x = 106,728.46

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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.