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Finding the Fourth Proportional to 123,412.60, 173,171.30 and 123,412.60

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Solution

The fourth proportional to 123,412.60, 173,171.30 and 123,412.60 is: 173,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,412.60 : 173,171.30 = 123,412.60 : x
  2. Step 2: Convert to fraction form
    123,412.60/173,171.30 = 123,412.60/x
  3. Step 3: Cross multiply
    123,412.60x = 173,171.30 × 123,412.60
  4. Step 4: Simplify right side
    123,412.60x = 21,371,520,378.38
  5. Step 5: Solve for x
    x = 21,371,520,378.38/123,412.60
  6. Step 6: Final answer
    x = 173,171.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.