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Finding the Fourth Proportional to 188,632.82, 260,181.48 and 128,098.37

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Solution

The fourth proportional to 188,632.82, 260,181.48 and 128,098.37 is: 176,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,632.82 : 260,181.48 = 128,098.37 : x
  2. Step 2: Convert to fraction form
    188,632.82/260,181.48 = 128,098.37/x
  3. Step 3: Cross multiply
    188,632.82x = 260,181.48 × 128,098.37
  4. Step 4: Simplify right side
    188,632.82x = 33,328,824,623.01
  5. Step 5: Solve for x
    x = 33,328,824,623.01/188,632.82
  6. Step 6: Final answer
    x = 176,686.24

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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.