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Finding the Fourth Proportional to 125,988.40, 188,982.60 and 123,072.40

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Solution

The fourth proportional to 125,988.40, 188,982.60 and 123,072.40 is: 184,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,988.40 : 188,982.60 = 123,072.40 : x
  2. Step 2: Convert to fraction form
    125,988.40/188,982.60 = 123,072.40/x
  3. Step 3: Cross multiply
    125,988.40x = 188,982.60 × 123,072.40
  4. Step 4: Simplify right side
    125,988.40x = 23,258,542,140.24
  5. Step 5: Solve for x
    x = 23,258,542,140.24/125,988.40
  6. Step 6: Final answer
    x = 184,608.60

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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.