Home / 257,783.05-386,670.30-105,949.36

Finding the Fourth Proportional to 257,783.05, 386,670.30 and 105,949.36

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Solution

The fourth proportional to 257,783.05, 386,670.30 and 105,949.36 is: 158,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,783.05 : 386,670.30 = 105,949.36 : x
  2. Step 2: Convert to fraction form
    257,783.05/386,670.30 = 105,949.36/x
  3. Step 3: Cross multiply
    257,783.05x = 386,670.30 × 105,949.36
  4. Step 4: Simplify right side
    257,783.05x = 40,967,470,816.01
  5. Step 5: Solve for x
    x = 40,967,470,816.01/257,783.05
  6. Step 6: Final answer
    x = 158,922.28

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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.