Home / 211,403.55-317,056.79-126,038.56

Finding the Fourth Proportional to 211,403.55, 317,056.79 and 126,038.56

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Solution

The fourth proportional to 211,403.55, 317,056.79 and 126,038.56 is: 189,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,403.55 : 317,056.79 = 126,038.56 : x
  2. Step 2: Convert to fraction form
    211,403.55/317,056.79 = 126,038.56/x
  3. Step 3: Cross multiply
    211,403.55x = 317,056.79 × 126,038.56
  4. Step 4: Simplify right side
    211,403.55x = 39,961,379,664.54
  5. Step 5: Solve for x
    x = 39,961,379,664.54/211,403.55
  6. Step 6: Final answer
    x = 189,028.90

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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.