Home / 128,822.64-193,195.08-76,218

Finding the Fourth Proportional to 128,822.64, 193,195.08 and 76,218

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Solution

The fourth proportional to 128,822.64, 193,195.08 and 76,218 is: 114,304.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,822.64 : 193,195.08 = 76,218 : x
  2. Step 2: Convert to fraction form
    128,822.64/193,195.08 = 76,218/x
  3. Step 3: Cross multiply
    128,822.64x = 193,195.08 × 76,218
  4. Step 4: Simplify right side
    128,822.64x = 14,724,942,607.44
  5. Step 5: Solve for x
    x = 14,724,942,607.44/128,822.64
  6. Step 6: Final answer
    x = 114,304.00

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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.