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Finding the Fourth Proportional to 123,505.81, 170,415.60 and 69,058.97

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Solution

The fourth proportional to 123,505.81, 170,415.60 and 69,058.97 is: 95,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,505.81 : 170,415.60 = 69,058.97 : x
  2. Step 2: Convert to fraction form
    123,505.81/170,415.60 = 69,058.97/x
  3. Step 3: Cross multiply
    123,505.81x = 170,415.60 × 69,058.97
  4. Step 4: Simplify right side
    123,505.81x = 11,768,725,096.29
  5. Step 5: Solve for x
    x = 11,768,725,096.29/123,505.81
  6. Step 6: Final answer
    x = 95,288.84

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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.