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Finding the Fourth Proportional to 123,177.99, 169,986.10 and 68,732.46

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Solution

The fourth proportional to 123,177.99, 169,986.10 and 68,732.46 is: 94,851.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,177.99 : 169,986.10 = 68,732.46 : x
  2. Step 2: Convert to fraction form
    123,177.99/169,986.10 = 68,732.46/x
  3. Step 3: Cross multiply
    123,177.99x = 169,986.10 × 68,732.46
  4. Step 4: Simplify right side
    123,177.99x = 11,683,562,818.81
  5. Step 5: Solve for x
    x = 11,683,562,818.81/123,177.99
  6. Step 6: Final answer
    x = 94,851.06

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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.