Home / 88,378.20-132,372.90-78,528.60

Finding the Fourth Proportional to 88,378.20, 132,372.90 and 78,528.60

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Solution

The fourth proportional to 88,378.20, 132,372.90 and 78,528.60 is: 117,620.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,378.20 : 132,372.90 = 78,528.60 : x
  2. Step 2: Convert to fraction form
    88,378.20/132,372.90 = 78,528.60/x
  3. Step 3: Cross multiply
    88,378.20x = 132,372.90 × 78,528.60
  4. Step 4: Simplify right side
    88,378.20x = 10,395,058,514.94
  5. Step 5: Solve for x
    x = 10,395,058,514.94/88,378.20
  6. Step 6: Final answer
    x = 117,620.17

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1.5x scale

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.