Home / 88,255.20-132,382.80-78,578.40

Finding the Fourth Proportional to 88,255.20, 132,382.80 and 78,578.40

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Solution

The fourth proportional to 88,255.20, 132,382.80 and 78,578.40 is: 117,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,255.20 : 132,382.80 = 78,578.40 : x
  2. Step 2: Convert to fraction form
    88,255.20/132,382.80 = 78,578.40/x
  3. Step 3: Cross multiply
    88,255.20x = 132,382.80 × 78,578.40
  4. Step 4: Simplify right side
    88,255.20x = 10,402,428,611.52
  5. Step 5: Solve for x
    x = 10,402,428,611.52/88,255.20
  6. Step 6: Final answer
    x = 117,867.60

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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.