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Finding the Fourth Proportional to 123,484.50, 170,415.90 and 69,768.14

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Solution

The fourth proportional to 123,484.50, 170,415.90 and 69,768.14 is: 96,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,484.50 : 170,415.90 = 69,768.14 : x
  2. Step 2: Convert to fraction form
    123,484.50/170,415.90 = 69,768.14/x
  3. Step 3: Cross multiply
    123,484.50x = 170,415.90 × 69,768.14
  4. Step 4: Simplify right side
    123,484.50x = 11,889,599,517.35
  5. Step 5: Solve for x
    x = 11,889,599,517.35/123,484.50
  6. Step 6: Final answer
    x = 96,284.15

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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.