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Finding the Fourth Proportional to 109,242.98, 150,777.64 and 68,929.58

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Solution

The fourth proportional to 109,242.98, 150,777.64 and 68,929.58 is: 95,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,242.98 : 150,777.64 = 68,929.58 : x
  2. Step 2: Convert to fraction form
    109,242.98/150,777.64 = 68,929.58/x
  3. Step 3: Cross multiply
    109,242.98x = 150,777.64 × 68,929.58
  4. Step 4: Simplify right side
    109,242.98x = 10,393,038,300.06
  5. Step 5: Solve for x
    x = 10,393,038,300.06/109,242.98
  6. Step 6: Final answer
    x = 95,136.90

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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.