Home / 212,021.73-318,079.53-69,861.29

Finding the Fourth Proportional to 212,021.73, 318,079.53 and 69,861.29

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Solution

The fourth proportional to 212,021.73, 318,079.53 and 69,861.29 is: 104,807.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,021.73 : 318,079.53 = 69,861.29 : x
  2. Step 2: Convert to fraction form
    212,021.73/318,079.53 = 69,861.29/x
  3. Step 3: Cross multiply
    212,021.73x = 318,079.53 × 69,861.29
  4. Step 4: Simplify right side
    212,021.73x = 22,221,444,698.00
  5. Step 5: Solve for x
    x = 22,221,444,698.00/212,021.73
  6. Step 6: Final answer
    x = 104,807.39

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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.