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Finding the Fourth Proportional to 117,418.80, 176,128.20 and 94,090.80

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Solution

The fourth proportional to 117,418.80, 176,128.20 and 94,090.80 is: 141,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,418.80 : 176,128.20 = 94,090.80 : x
  2. Step 2: Convert to fraction form
    117,418.80/176,128.20 = 94,090.80/x
  3. Step 3: Cross multiply
    117,418.80x = 176,128.20 × 94,090.80
  4. Step 4: Simplify right side
    117,418.80x = 16,572,043,240.56
  5. Step 5: Solve for x
    x = 16,572,043,240.56/117,418.80
  6. Step 6: Final answer
    x = 141,136.20

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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.