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Finding the Fourth Proportional to 131,274, 195,886.62 and 117,136.80

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Solution

The fourth proportional to 131,274, 195,886.62 and 117,136.80 is: 174,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,274 : 195,886.62 = 117,136.80 : x
  2. Step 2: Convert to fraction form
    131,274/195,886.62 = 117,136.80/x
  3. Step 3: Cross multiply
    131,274x = 195,886.62 × 117,136.80
  4. Step 4: Simplify right side
    131,274x = 22,945,531,829.62
  5. Step 5: Solve for x
    x = 22,945,531,829.62/131,274
  6. Step 6: Final answer
    x = 174,791.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.