Home / 129,000.40-193,500.60-115,222.30

Finding the Fourth Proportional to 129,000.40, 193,500.60 and 115,222.30

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Solution

The fourth proportional to 129,000.40, 193,500.60 and 115,222.30 is: 172,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,000.40 : 193,500.60 = 115,222.30 : x
  2. Step 2: Convert to fraction form
    129,000.40/193,500.60 = 115,222.30/x
  3. Step 3: Cross multiply
    129,000.40x = 193,500.60 × 115,222.30
  4. Step 4: Simplify right side
    129,000.40x = 22,295,584,183.38
  5. Step 5: Solve for x
    x = 22,295,584,183.38/129,000.40
  6. Step 6: Final answer
    x = 172,833.45

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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.