Home / 123,611.60-185,302.20-86,171.60

Finding the Fourth Proportional to 123,611.60, 185,302.20 and 86,171.60

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Solution

The fourth proportional to 123,611.60, 185,302.20 and 86,171.60 is: 129,177.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,611.60 : 185,302.20 = 86,171.60 : x
  2. Step 2: Convert to fraction form
    123,611.60/185,302.20 = 86,171.60/x
  3. Step 3: Cross multiply
    123,611.60x = 185,302.20 × 86,171.60
  4. Step 4: Simplify right side
    123,611.60x = 15,967,787,057.52
  5. Step 5: Solve for x
    x = 15,967,787,057.52/123,611.60
  6. Step 6: Final answer
    x = 129,177.09

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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.