Home / 88,719.20-132,884.40-78,869.60

Finding the Fourth Proportional to 88,719.20, 132,884.40 and 78,869.60

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Solution

The fourth proportional to 88,719.20, 132,884.40 and 78,869.60 is: 118,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,719.20 : 132,884.40 = 78,869.60 : x
  2. Step 2: Convert to fraction form
    88,719.20/132,884.40 = 78,869.60/x
  3. Step 3: Cross multiply
    88,719.20x = 132,884.40 × 78,869.60
  4. Step 4: Simplify right side
    88,719.20x = 10,480,539,474.24
  5. Step 5: Solve for x
    x = 10,480,539,474.24/88,719.20
  6. Step 6: Final answer
    x = 118,131.58

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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.