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Finding the Fourth Proportional to 123,051.66, 169,811.40 and 66,463.03

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Solution

The fourth proportional to 123,051.66, 169,811.40 and 66,463.03 is: 91,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,051.66 : 169,811.40 = 66,463.03 : x
  2. Step 2: Convert to fraction form
    123,051.66/169,811.40 = 66,463.03/x
  3. Step 3: Cross multiply
    123,051.66x = 169,811.40 × 66,463.03
  4. Step 4: Simplify right side
    123,051.66x = 11,286,180,353.65
  5. Step 5: Solve for x
    x = 11,286,180,353.65/123,051.66
  6. Step 6: Final answer
    x = 91,719.04

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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.