Home / 211,129.58-315,899.82-148,072.79

Finding the Fourth Proportional to 211,129.58, 315,899.82 and 148,072.79

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Solution

The fourth proportional to 211,129.58, 315,899.82 and 148,072.79 is: 221,551.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,129.58 : 315,899.82 = 148,072.79 : x
  2. Step 2: Convert to fraction form
    211,129.58/315,899.82 = 148,072.79/x
  3. Step 3: Cross multiply
    211,129.58x = 315,899.82 × 148,072.79
  4. Step 4: Simplify right side
    211,129.58x = 46,776,167,707.90
  5. Step 5: Solve for x
    x = 46,776,167,707.90/211,129.58
  6. Step 6: Final answer
    x = 221,551.94

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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.