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Finding the Fourth Proportional to 131,992.70, 181,973.72 and 104,858.82

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Solution

The fourth proportional to 131,992.70, 181,973.72 and 104,858.82 is: 144,565.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,992.70 : 181,973.72 = 104,858.82 : x
  2. Step 2: Convert to fraction form
    131,992.70/181,973.72 = 104,858.82/x
  3. Step 3: Cross multiply
    131,992.70x = 181,973.72 × 104,858.82
  4. Step 4: Simplify right side
    131,992.70x = 19,081,548,116.05
  5. Step 5: Solve for x
    x = 19,081,548,116.05/131,992.70
  6. Step 6: Final answer
    x = 144,565.18

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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.