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Finding the Fourth Proportional to 188,271.75, 259,816.84 and 103,390.64

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Solution

The fourth proportional to 188,271.75, 259,816.84 and 103,390.64 is: 142,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,271.75 : 259,816.84 = 103,390.64 : x
  2. Step 2: Convert to fraction form
    188,271.75/259,816.84 = 103,390.64/x
  3. Step 3: Cross multiply
    188,271.75x = 259,816.84 × 103,390.64
  4. Step 4: Simplify right side
    188,271.75x = 26,862,627,812.82
  5. Step 5: Solve for x
    x = 26,862,627,812.82/188,271.75
  6. Step 6: Final answer
    x = 142,680.08

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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.