Home / 128,784.40-193,176.60-34,014.40

Finding the Fourth Proportional to 128,784.40, 193,176.60 and 34,014.40

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Solution

The fourth proportional to 128,784.40, 193,176.60 and 34,014.40 is: 51,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,784.40 : 193,176.60 = 34,014.40 : x
  2. Step 2: Convert to fraction form
    128,784.40/193,176.60 = 34,014.40/x
  3. Step 3: Cross multiply
    128,784.40x = 193,176.60 × 34,014.40
  4. Step 4: Simplify right side
    128,784.40x = 6,570,786,143.04
  5. Step 5: Solve for x
    x = 6,570,786,143.04/128,784.40
  6. Step 6: Final answer
    x = 51,021.60

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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.