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Finding the Fourth Proportional to 188,900.70, 283,350.72 and 129,556.47

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Solution

The fourth proportional to 188,900.70, 283,350.72 and 129,556.47 is: 194,334.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,900.70 : 283,350.72 = 129,556.47 : x
  2. Step 2: Convert to fraction form
    188,900.70/283,350.72 = 129,556.47/x
  3. Step 3: Cross multiply
    188,900.70x = 283,350.72 × 129,556.47
  4. Step 4: Simplify right side
    188,900.70x = 36,709,919,055.16
  5. Step 5: Solve for x
    x = 36,709,919,055.16/188,900.70
  6. Step 6: Final answer
    x = 194,334.48

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1.5x scale

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.