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Finding the Fourth Proportional to 188,211.83, 259,729.08 and 103,328.28

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Solution

The fourth proportional to 188,211.83, 259,729.08 and 103,328.28 is: 142,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,211.83 : 259,729.08 = 103,328.28 : x
  2. Step 2: Convert to fraction form
    188,211.83/259,729.08 = 103,328.28/x
  3. Step 3: Cross multiply
    188,211.83x = 259,729.08 × 103,328.28
  4. Step 4: Simplify right side
    188,211.83x = 26,837,359,102.38
  5. Step 5: Solve for x
    x = 26,837,359,102.38/188,211.83
  6. Step 6: Final answer
    x = 142,591.25

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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.