Home / 188,128.70-259,617.60-112,677.20

Finding the Fourth Proportional to 188,128.70, 259,617.60 and 112,677.20

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Solution

The fourth proportional to 188,128.70, 259,617.60 and 112,677.20 is: 155,494.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,128.70 : 259,617.60 = 112,677.20 : x
  2. Step 2: Convert to fraction form
    188,128.70/259,617.60 = 112,677.20/x
  3. Step 3: Cross multiply
    188,128.70x = 259,617.60 × 112,677.20
  4. Step 4: Simplify right side
    188,128.70x = 29,252,982,940.63
  5. Step 5: Solve for x
    x = 29,252,982,940.63/188,128.70
  6. Step 6: Final answer
    x = 155,494.53

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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.