Home / 128,742.21-193,076.46-44,480.34

Finding the Fourth Proportional to 128,742.21, 193,076.46 and 44,480.34

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Solution

The fourth proportional to 128,742.21, 193,076.46 and 44,480.34 is: 66,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742.21 : 193,076.46 = 44,480.34 : x
  2. Step 2: Convert to fraction form
    128,742.21/193,076.46 = 44,480.34/x
  3. Step 3: Cross multiply
    128,742.21x = 193,076.46 × 44,480.34
  4. Step 4: Simplify right side
    128,742.21x = 8,588,106,586.80
  5. Step 5: Solve for x
    x = 8,588,106,586.80/128,742.21
  6. Step 6: Final answer
    x = 66,707.78

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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.