Home / 123,639.27-170,629.39-69,190.98

Finding the Fourth Proportional to 123,639.27, 170,629.39 and 69,190.98

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Solution

The fourth proportional to 123,639.27, 170,629.39 and 69,190.98 is: 95,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,639.27 : 170,629.39 = 69,190.98 : x
  2. Step 2: Convert to fraction form
    123,639.27/170,629.39 = 69,190.98/x
  3. Step 3: Cross multiply
    123,639.27x = 170,629.39 × 69,190.98
  4. Step 4: Simplify right side
    123,639.27x = 11,806,014,710.90
  5. Step 5: Solve for x
    x = 11,806,014,710.90/123,639.27
  6. Step 6: Final answer
    x = 95,487.58

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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.