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Finding the Fourth Proportional to 88,123.60, 132,379.80 and 84,818.80

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Solution

The fourth proportional to 88,123.60, 132,379.80 and 84,818.80 is: 127,415.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,123.60 : 132,379.80 = 84,818.80 : x
  2. Step 2: Convert to fraction form
    88,123.60/132,379.80 = 84,818.80/x
  3. Step 3: Cross multiply
    88,123.60x = 132,379.80 × 84,818.80
  4. Step 4: Simplify right side
    88,123.60x = 11,228,295,780.24
  5. Step 5: Solve for x
    x = 11,228,295,780.24/88,123.60
  6. Step 6: Final answer
    x = 127,415.31

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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.