Home / 188,635.22-260,184.79-128,100.78

Finding the Fourth Proportional to 188,635.22, 260,184.79 and 128,100.78

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Solution

The fourth proportional to 188,635.22, 260,184.79 and 128,100.78 is: 176,689.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,635.22 : 260,184.79 = 128,100.78 : x
  2. Step 2: Convert to fraction form
    188,635.22/260,184.79 = 128,100.78/x
  3. Step 3: Cross multiply
    188,635.22x = 260,184.79 × 128,100.78
  4. Step 4: Simplify right side
    188,635.22x = 33,329,874,543.14
  5. Step 5: Solve for x
    x = 33,329,874,543.14/188,635.22
  6. Step 6: Final answer
    x = 176,689.56

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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.