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Finding the Fourth Proportional to 132,485.56, 182,776.12 and 75,112.80

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Solution

The fourth proportional to 132,485.56, 182,776.12 and 75,112.80 is: 103,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,485.56 : 182,776.12 = 75,112.80 : x
  2. Step 2: Convert to fraction form
    132,485.56/182,776.12 = 75,112.80/x
  3. Step 3: Cross multiply
    132,485.56x = 182,776.12 × 75,112.80
  4. Step 4: Simplify right side
    132,485.56x = 13,728,826,146.34
  5. Step 5: Solve for x
    x = 13,728,826,146.34/132,485.56
  6. Step 6: Final answer
    x = 103,625.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.