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Finding the Fourth Proportional to 131,993.34, 182,102.99 and 86,695.89

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Solution

The fourth proportional to 131,993.34, 182,102.99 and 86,695.89 is: 119,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,993.34 : 182,102.99 = 86,695.89 : x
  2. Step 2: Convert to fraction form
    131,993.34/182,102.99 = 86,695.89/x
  3. Step 3: Cross multiply
    131,993.34x = 182,102.99 × 86,695.89
  4. Step 4: Simplify right side
    131,993.34x = 15,787,580,356.23
  5. Step 5: Solve for x
    x = 15,787,580,356.23/131,993.34
  6. Step 6: Final answer
    x = 119,608.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.