Home / 128,930.43-193,435.25-61,548.45

Finding the Fourth Proportional to 128,930.43, 193,435.25 and 61,548.45

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Solution

The fourth proportional to 128,930.43, 193,435.25 and 61,548.45 is: 92,341.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,930.43 : 193,435.25 = 61,548.45 : x
  2. Step 2: Convert to fraction form
    128,930.43/193,435.25 = 61,548.45/x
  3. Step 3: Cross multiply
    128,930.43x = 193,435.25 × 61,548.45
  4. Step 4: Simplify right side
    128,930.43x = 11,905,639,505.12
  5. Step 5: Solve for x
    x = 11,905,639,505.12/128,930.43
  6. Step 6: Final answer
    x = 92,341.58

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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.