Home / 204,431.78-306,687.80-71,316.38

Finding the Fourth Proportional to 204,431.78, 306,687.80 and 71,316.38

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Solution

The fourth proportional to 204,431.78, 306,687.80 and 71,316.38 is: 106,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,431.78 : 306,687.80 = 71,316.38 : x
  2. Step 2: Convert to fraction form
    204,431.78/306,687.80 = 71,316.38/x
  3. Step 3: Cross multiply
    204,431.78x = 306,687.80 × 71,316.38
  4. Step 4: Simplify right side
    204,431.78x = 21,871,863,686.16
  5. Step 5: Solve for x
    x = 21,871,863,686.16/204,431.78
  6. Step 6: Final answer
    x = 106,988.57

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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.