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Finding the Fourth Proportional to 123,376.91, 185,072.10 and 39,130.97

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Solution

The fourth proportional to 123,376.91, 185,072.10 and 39,130.97 is: 58,698.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,376.91 : 185,072.10 = 39,130.97 : x
  2. Step 2: Convert to fraction form
    123,376.91/185,072.10 = 39,130.97/x
  3. Step 3: Cross multiply
    123,376.91x = 185,072.10 × 39,130.97
  4. Step 4: Simplify right side
    123,376.91x = 7,242,049,867.58
  5. Step 5: Solve for x
    x = 7,242,049,867.58/123,376.91
  6. Step 6: Final answer
    x = 58,698.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.