Home / 129,216.40-194,256.60-112,109.20

Finding the Fourth Proportional to 129,216.40, 194,256.60 and 112,109.20

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Solution

The fourth proportional to 129,216.40, 194,256.60 and 112,109.20 is: 168,538.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,216.40 : 194,256.60 = 112,109.20 : x
  2. Step 2: Convert to fraction form
    129,216.40/194,256.60 = 112,109.20/x
  3. Step 3: Cross multiply
    129,216.40x = 194,256.60 × 112,109.20
  4. Step 4: Simplify right side
    129,216.40x = 21,777,952,020.72
  5. Step 5: Solve for x
    x = 21,777,952,020.72/129,216.40
  6. Step 6: Final answer
    x = 168,538.61

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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.