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Finding the Fourth Proportional to 158,181.34, 218,284.95 and 86,556.55

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Solution

The fourth proportional to 158,181.34, 218,284.95 and 86,556.55 is: 119,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,181.34 : 218,284.95 = 86,556.55 : x
  2. Step 2: Convert to fraction form
    158,181.34/218,284.95 = 86,556.55/x
  3. Step 3: Cross multiply
    158,181.34x = 218,284.95 × 86,556.55
  4. Step 4: Simplify right side
    158,181.34x = 18,893,992,188.92
  5. Step 5: Solve for x
    x = 18,893,992,188.92/158,181.34
  6. Step 6: Final answer
    x = 119,445.14

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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.