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Finding the Fourth Proportional to 132,531.12, 198,754.56 and 43,768.08

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Solution

The fourth proportional to 132,531.12, 198,754.56 and 43,768.08 is: 65,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,531.12 : 198,754.56 = 43,768.08 : x
  2. Step 2: Convert to fraction form
    132,531.12/198,754.56 = 43,768.08/x
  3. Step 3: Cross multiply
    132,531.12x = 198,754.56 × 43,768.08
  4. Step 4: Simplify right side
    132,531.12x = 8,699,105,482.44
  5. Step 5: Solve for x
    x = 8,699,105,482.44/132,531.12
  6. Step 6: Final answer
    x = 65,638.21

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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.