Home / 191,921.30-287,291.46-125,217.80

Finding the Fourth Proportional to 191,921.30, 287,291.46 and 125,217.80

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Solution

The fourth proportional to 191,921.30, 287,291.46 and 125,217.80 is: 187,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,921.30 : 287,291.46 = 125,217.80 : x
  2. Step 2: Convert to fraction form
    191,921.30/287,291.46 = 125,217.80/x
  3. Step 3: Cross multiply
    191,921.30x = 287,291.46 × 125,217.80
  4. Step 4: Simplify right side
    191,921.30x = 35,974,003,986.09
  5. Step 5: Solve for x
    x = 35,974,003,986.09/191,921.30
  6. Step 6: Final answer
    x = 187,441.44

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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.