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Finding the Fourth Proportional to 132,539.98, 198,934.53 and 69,405.41

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Solution

The fourth proportional to 132,539.98, 198,934.53 and 69,405.41 is: 104,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,539.98 : 198,934.53 = 69,405.41 : x
  2. Step 2: Convert to fraction form
    132,539.98/198,934.53 = 69,405.41/x
  3. Step 3: Cross multiply
    132,539.98x = 198,934.53 × 69,405.41
  4. Step 4: Simplify right side
    132,539.98x = 13,807,132,270.78
  5. Step 5: Solve for x
    x = 13,807,132,270.78/132,539.98
  6. Step 6: Final answer
    x = 104,173.34

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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.