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Finding the Fourth Proportional to 139,380.44, 208,754.43 and 88,779.74

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Solution

The fourth proportional to 139,380.44, 208,754.43 and 88,779.74 is: 132,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,380.44 : 208,754.43 = 88,779.74 : x
  2. Step 2: Convert to fraction form
    139,380.44/208,754.43 = 88,779.74/x
  3. Step 3: Cross multiply
    139,380.44x = 208,754.43 × 88,779.74
  4. Step 4: Simplify right side
    139,380.44x = 18,533,162,975.48
  5. Step 5: Solve for x
    x = 18,533,162,975.48/139,380.44
  6. Step 6: Final answer
    x = 132,968.18

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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.