Home / 188,634.78-260,184.18-128,100.34

Finding the Fourth Proportional to 188,634.78, 260,184.18 and 128,100.34

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Solution

The fourth proportional to 188,634.78, 260,184.18 and 128,100.34 is: 176,688.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,634.78 : 260,184.18 = 128,100.34 : x
  2. Step 2: Convert to fraction form
    188,634.78/260,184.18 = 128,100.34/x
  3. Step 3: Cross multiply
    188,634.78x = 260,184.18 × 128,100.34
  4. Step 4: Simplify right side
    188,634.78x = 33,329,682,726.23
  5. Step 5: Solve for x
    x = 33,329,682,726.23/188,634.78
  6. Step 6: Final answer
    x = 176,688.96

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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.