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Finding the Fourth Proportional to 132,468.60, 198,268.50 and 72,405.06

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Solution

The fourth proportional to 132,468.60, 198,268.50 and 72,405.06 is: 108,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,468.60 : 198,268.50 = 72,405.06 : x
  2. Step 2: Convert to fraction form
    132,468.60/198,268.50 = 72,405.06/x
  3. Step 3: Cross multiply
    132,468.60x = 198,268.50 × 72,405.06
  4. Step 4: Simplify right side
    132,468.60x = 14,355,642,638.61
  5. Step 5: Solve for x
    x = 14,355,642,638.61/132,468.60
  6. Step 6: Final answer
    x = 108,370.15

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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.