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Finding the Fourth Proportional to 123,697.68, 170,791.56 and 76,014.96

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Solution

The fourth proportional to 123,697.68, 170,791.56 and 76,014.96 is: 104,955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,697.68 : 170,791.56 = 76,014.96 : x
  2. Step 2: Convert to fraction form
    123,697.68/170,791.56 = 76,014.96/x
  3. Step 3: Cross multiply
    123,697.68x = 170,791.56 × 76,014.96
  4. Step 4: Simplify right side
    123,697.68x = 12,982,713,601.74
  5. Step 5: Solve for x
    x = 12,982,713,601.74/123,697.68
  6. Step 6: Final answer
    x = 104,955.19

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1.5x scale

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.