Home / 211,383.16-317,123.54-71,138.36

Finding the Fourth Proportional to 211,383.16, 317,123.54 and 71,138.36

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Solution

The fourth proportional to 211,383.16, 317,123.54 and 71,138.36 is: 106,723.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,383.16 : 317,123.54 = 71,138.36 : x
  2. Step 2: Convert to fraction form
    211,383.16/317,123.54 = 71,138.36/x
  3. Step 3: Cross multiply
    211,383.16x = 317,123.54 × 71,138.36
  4. Step 4: Simplify right side
    211,383.16x = 22,559,648,552.99
  5. Step 5: Solve for x
    x = 22,559,648,552.99/211,383.16
  6. Step 6: Final answer
    x = 106,723.96

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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.