Home / 166,763.10-230,130.78-91,311.60

Finding the Fourth Proportional to 166,763.10, 230,130.78 and 91,311.60

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Solution

The fourth proportional to 166,763.10, 230,130.78 and 91,311.60 is: 126,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,763.10 : 230,130.78 = 91,311.60 : x
  2. Step 2: Convert to fraction form
    166,763.10/230,130.78 = 91,311.60/x
  3. Step 3: Cross multiply
    166,763.10x = 230,130.78 × 91,311.60
  4. Step 4: Simplify right side
    166,763.10x = 21,013,609,731.05
  5. Step 5: Solve for x
    x = 21,013,609,731.05/166,763.10
  6. Step 6: Final answer
    x = 126,008.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.