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Finding the Fourth Proportional to 132,403.84, 198,618.72 and 43,621.12

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Solution

The fourth proportional to 132,403.84, 198,618.72 and 43,621.12 is: 65,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,403.84 : 198,618.72 = 43,621.12 : x
  2. Step 2: Convert to fraction form
    132,403.84/198,618.72 = 43,621.12/x
  3. Step 3: Cross multiply
    132,403.84x = 198,618.72 × 43,621.12
  4. Step 4: Simplify right side
    132,403.84x = 8,663,971,019.37
  5. Step 5: Solve for x
    x = 8,663,971,019.37/132,403.84
  6. Step 6: Final answer
    x = 65,435.95

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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.