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Finding the Fourth Proportional to 132,376.60, 182,650.74 and 78,679.48

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Solution

The fourth proportional to 132,376.60, 182,650.74 and 78,679.48 is: 108,560.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,376.60 : 182,650.74 = 78,679.48 : x
  2. Step 2: Convert to fraction form
    132,376.60/182,650.74 = 78,679.48/x
  3. Step 3: Cross multiply
    132,376.60x = 182,650.74 × 78,679.48
  4. Step 4: Simplify right side
    132,376.60x = 14,370,865,244.82
  5. Step 5: Solve for x
    x = 14,370,865,244.82/132,376.60
  6. Step 6: Final answer
    x = 108,560.46

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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.