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Finding the Fourth Proportional to 123,400.60, 185,295.30 and 70,912.60

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Solution

The fourth proportional to 123,400.60, 185,295.30 and 70,912.60 is: 106,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,400.60 : 185,295.30 = 70,912.60 : x
  2. Step 2: Convert to fraction form
    123,400.60/185,295.30 = 70,912.60/x
  3. Step 3: Cross multiply
    123,400.60x = 185,295.30 × 70,912.60
  4. Step 4: Simplify right side
    123,400.60x = 13,139,771,490.78
  5. Step 5: Solve for x
    x = 13,139,771,490.78/123,400.60
  6. Step 6: Final answer
    x = 106,480.61

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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.