Home / 109,541.09-151,072.07-71,286.87

Finding the Fourth Proportional to 109,541.09, 151,072.07 and 71,286.87

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Solution

The fourth proportional to 109,541.09, 151,072.07 and 71,286.87 is: 98,314.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,541.09 : 151,072.07 = 71,286.87 : x
  2. Step 2: Convert to fraction form
    109,541.09/151,072.07 = 71,286.87/x
  3. Step 3: Cross multiply
    109,541.09x = 151,072.07 × 71,286.87
  4. Step 4: Simplify right side
    109,541.09x = 10,769,455,014.72
  5. Step 5: Solve for x
    x = 10,769,455,014.72/109,541.09
  6. Step 6: Final answer
    x = 98,314.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.