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Finding the Fourth Proportional to 165,978.44, 248,981.70 and 72,549.80

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Solution

The fourth proportional to 165,978.44, 248,981.70 and 72,549.80 is: 108,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,978.44 : 248,981.70 = 72,549.80 : x
  2. Step 2: Convert to fraction form
    165,978.44/248,981.70 = 72,549.80/x
  3. Step 3: Cross multiply
    165,978.44x = 248,981.70 × 72,549.80
  4. Step 4: Simplify right side
    165,978.44x = 18,063,572,538.66
  5. Step 5: Solve for x
    x = 18,063,572,538.66/165,978.44
  6. Step 6: Final answer
    x = 108,830.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.