Home / 216,126.45-324,237.92-66,381.89

Finding the Fourth Proportional to 216,126.45, 324,237.92 and 66,381.89

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Solution

The fourth proportional to 216,126.45, 324,237.92 and 66,381.89 is: 99,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,126.45 : 324,237.92 = 66,381.89 : x
  2. Step 2: Convert to fraction form
    216,126.45/324,237.92 = 66,381.89/x
  3. Step 3: Cross multiply
    216,126.45x = 324,237.92 × 66,381.89
  4. Step 4: Simplify right side
    216,126.45x = 21,523,523,986.17
  5. Step 5: Solve for x
    x = 21,523,523,986.17/216,126.45
  6. Step 6: Final answer
    x = 99,587.64

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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.