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Finding the Fourth Proportional to 123,094.26, 169,870.20 and 66,505.76

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Solution

The fourth proportional to 123,094.26, 169,870.20 and 66,505.76 is: 91,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,094.26 : 169,870.20 = 66,505.76 : x
  2. Step 2: Convert to fraction form
    123,094.26/169,870.20 = 66,505.76/x
  3. Step 3: Cross multiply
    123,094.26x = 169,870.20 × 66,505.76
  4. Step 4: Simplify right side
    123,094.26x = 11,297,346,752.35
  5. Step 5: Solve for x
    x = 11,297,346,752.35/123,094.26
  6. Step 6: Final answer
    x = 91,778.01

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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.