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Finding the Fourth Proportional to 123,164.45, 169,878.77 and 80,063.54

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Solution

The fourth proportional to 123,164.45, 169,878.77 and 80,063.54 is: 110,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,164.45 : 169,878.77 = 80,063.54 : x
  2. Step 2: Convert to fraction form
    123,164.45/169,878.77 = 80,063.54/x
  3. Step 3: Cross multiply
    123,164.45x = 169,878.77 × 80,063.54
  4. Step 4: Simplify right side
    123,164.45x = 13,601,095,384.62
  5. Step 5: Solve for x
    x = 13,601,095,384.62/123,164.45
  6. Step 6: Final answer
    x = 110,430.37

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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.