Home / 122,078.60-182,896.44-90,136.78

Finding the Fourth Proportional to 122,078.60, 182,896.44 and 90,136.78

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Solution

The fourth proportional to 122,078.60, 182,896.44 and 90,136.78 is: 135,041.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,078.60 : 182,896.44 = 90,136.78 : x
  2. Step 2: Convert to fraction form
    122,078.60/182,896.44 = 90,136.78/x
  3. Step 3: Cross multiply
    122,078.60x = 182,896.44 × 90,136.78
  4. Step 4: Simplify right side
    122,078.60x = 16,485,696,175.06
  5. Step 5: Solve for x
    x = 16,485,696,175.06/122,078.60
  6. Step 6: Final answer
    x = 135,041.65

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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.