Home / 191,344.35-287,021.25-91,515.09

Finding the Fourth Proportional to 191,344.35, 287,021.25 and 91,515.09

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Solution

The fourth proportional to 191,344.35, 287,021.25 and 91,515.09 is: 137,274.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,344.35 : 287,021.25 = 91,515.09 : x
  2. Step 2: Convert to fraction form
    191,344.35/287,021.25 = 91,515.09/x
  3. Step 3: Cross multiply
    191,344.35x = 287,021.25 × 91,515.09
  4. Step 4: Simplify right side
    191,344.35x = 26,266,775,525.66
  5. Step 5: Solve for x
    x = 26,266,775,525.66/191,344.35
  6. Step 6: Final answer
    x = 137,274.89

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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.