Home / 190,256.64-285,388.16-71,983.68

Finding the Fourth Proportional to 190,256.64, 285,388.16 and 71,983.68

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Solution

The fourth proportional to 190,256.64, 285,388.16 and 71,983.68 is: 107,976.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,256.64 : 285,388.16 = 71,983.68 : x
  2. Step 2: Convert to fraction form
    190,256.64/285,388.16 = 71,983.68/x
  3. Step 3: Cross multiply
    190,256.64x = 285,388.16 × 71,983.68
  4. Step 4: Simplify right side
    190,256.64x = 20,543,289,985.23
  5. Step 5: Solve for x
    x = 20,543,289,985.23/190,256.64
  6. Step 6: Final answer
    x = 107,976.73

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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.