Home / 128,928.27-193,393.74-38,971.73

Finding the Fourth Proportional to 128,928.27, 193,393.74 and 38,971.73

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Solution

The fourth proportional to 128,928.27, 193,393.74 and 38,971.73 is: 58,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,928.27 : 193,393.74 = 38,971.73 : x
  2. Step 2: Convert to fraction form
    128,928.27/193,393.74 = 38,971.73/x
  3. Step 3: Cross multiply
    128,928.27x = 193,393.74 × 38,971.73
  4. Step 4: Simplify right side
    128,928.27x = 7,536,889,248.60
  5. Step 5: Solve for x
    x = 7,536,889,248.60/128,928.27
  6. Step 6: Final answer
    x = 58,458.00

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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.