Home / 191,918.70-287,735.88-91,983.78

Finding the Fourth Proportional to 191,918.70, 287,735.88 and 91,983.78

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Solution

The fourth proportional to 191,918.70, 287,735.88 and 91,983.78 is: 137,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,918.70 : 287,735.88 = 91,983.78 : x
  2. Step 2: Convert to fraction form
    191,918.70/287,735.88 = 91,983.78/x
  3. Step 3: Cross multiply
    191,918.70x = 287,735.88 × 91,983.78
  4. Step 4: Simplify right side
    191,918.70x = 26,467,033,884.03
  5. Step 5: Solve for x
    x = 26,467,033,884.03/191,918.70
  6. Step 6: Final answer
    x = 137,907.53

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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.