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Finding the Fourth Proportional to 199,089.66, 298,486.26 and 86,748.60

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Solution

The fourth proportional to 199,089.66, 298,486.26 and 86,748.60 is: 130,058.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,089.66 : 298,486.26 = 86,748.60 : x
  2. Step 2: Convert to fraction form
    199,089.66/298,486.26 = 86,748.60/x
  3. Step 3: Cross multiply
    199,089.66x = 298,486.26 × 86,748.60
  4. Step 4: Simplify right side
    199,089.66x = 25,893,265,174.24
  5. Step 5: Solve for x
    x = 25,893,265,174.24/199,089.66
  6. Step 6: Final answer
    x = 130,058.31

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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.