Home / 129,216.32-193,826.40-85,125.44

Finding the Fourth Proportional to 129,216.32, 193,826.40 and 85,125.44

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Solution

The fourth proportional to 129,216.32, 193,826.40 and 85,125.44 is: 127,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,216.32 : 193,826.40 = 85,125.44 : x
  2. Step 2: Convert to fraction form
    129,216.32/193,826.40 = 85,125.44/x
  3. Step 3: Cross multiply
    129,216.32x = 193,826.40 × 85,125.44
  4. Step 4: Simplify right side
    129,216.32x = 16,499,557,583.62
  5. Step 5: Solve for x
    x = 16,499,557,583.62/129,216.32
  6. Step 6: Final answer
    x = 127,689.42

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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.