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Finding the Fourth Proportional to 131,558.44, 181,547.94 and 71,942.44

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Solution

The fourth proportional to 131,558.44, 181,547.94 and 71,942.44 is: 99,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,558.44 : 181,547.94 = 71,942.44 : x
  2. Step 2: Convert to fraction form
    131,558.44/181,547.94 = 71,942.44/x
  3. Step 3: Cross multiply
    131,558.44x = 181,547.94 × 71,942.44
  4. Step 4: Simplify right side
    131,558.44x = 13,061,001,780.57
  5. Step 5: Solve for x
    x = 13,061,001,780.57/131,558.44
  6. Step 6: Final answer
    x = 99,279.09

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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.