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Finding the Fourth Proportional to 188,713.79, 260,425.02 and 103,830.84

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Solution

The fourth proportional to 188,713.79, 260,425.02 and 103,830.84 is: 143,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,713.79 : 260,425.02 = 103,830.84 : x
  2. Step 2: Convert to fraction form
    188,713.79/260,425.02 = 103,830.84/x
  3. Step 3: Cross multiply
    188,713.79x = 260,425.02 × 103,830.84
  4. Step 4: Simplify right side
    188,713.79x = 27,040,148,583.62
  5. Step 5: Solve for x
    x = 27,040,148,583.62/188,713.79
  6. Step 6: Final answer
    x = 143,286.56

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1.5x scale

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.