Home / 128,783.28-193,127.60-44,521.84

Finding the Fourth Proportional to 128,783.28, 193,127.60 and 44,521.84

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Solution

The fourth proportional to 128,783.28, 193,127.60 and 44,521.84 is: 66,766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,783.28 : 193,127.60 = 44,521.84 : x
  2. Step 2: Convert to fraction form
    128,783.28/193,127.60 = 44,521.84/x
  3. Step 3: Cross multiply
    128,783.28x = 193,127.60 × 44,521.84
  4. Step 4: Simplify right side
    128,783.28x = 8,598,396,106.78
  5. Step 5: Solve for x
    x = 8,598,396,106.78/128,783.28
  6. Step 6: Final answer
    x = 66,766.40

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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.