Home / 129,256.40-193,423.80-89,627.60

Finding the Fourth Proportional to 129,256.40, 193,423.80 and 89,627.60

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Solution

The fourth proportional to 129,256.40, 193,423.80 and 89,627.60 is: 134,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,256.40 : 193,423.80 = 89,627.60 : x
  2. Step 2: Convert to fraction form
    129,256.40/193,423.80 = 89,627.60/x
  3. Step 3: Cross multiply
    129,256.40x = 193,423.80 × 89,627.60
  4. Step 4: Simplify right side
    129,256.40x = 17,336,110,976.88
  5. Step 5: Solve for x
    x = 17,336,110,976.88/129,256.40
  6. Step 6: Final answer
    x = 134,121.88

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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.