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Finding the Fourth Proportional to 88,768.40, 132,893.40 and 79,437.20

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Solution

The fourth proportional to 88,768.40, 132,893.40 and 79,437.20 is: 118,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,768.40 : 132,893.40 = 79,437.20 : x
  2. Step 2: Convert to fraction form
    88,768.40/132,893.40 = 79,437.20/x
  3. Step 3: Cross multiply
    88,768.40x = 132,893.40 × 79,437.20
  4. Step 4: Simplify right side
    88,768.40x = 10,556,679,594.48
  5. Step 5: Solve for x
    x = 10,556,679,594.48/88,768.40
  6. Step 6: Final answer
    x = 118,923.85

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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.