Home / 88,725.20-132,893.40-78,875.60

Finding the Fourth Proportional to 88,725.20, 132,893.40 and 78,875.60

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Solution

The fourth proportional to 88,725.20, 132,893.40 and 78,875.60 is: 118,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,725.20 : 132,893.40 = 78,875.60 : x
  2. Step 2: Convert to fraction form
    88,725.20/132,893.40 = 78,875.60/x
  3. Step 3: Cross multiply
    88,725.20x = 132,893.40 × 78,875.60
  4. Step 4: Simplify right side
    88,725.20x = 10,482,046,661.04
  5. Step 5: Solve for x
    x = 10,482,046,661.04/88,725.20
  6. Step 6: Final answer
    x = 118,140.58

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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.