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Finding the Fourth Proportional to 123,124.92, 169,896.02 and 69,412.20

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Solution

The fourth proportional to 123,124.92, 169,896.02 and 69,412.20 is: 95,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,124.92 : 169,896.02 = 69,412.20 : x
  2. Step 2: Convert to fraction form
    123,124.92/169,896.02 = 69,412.20/x
  3. Step 3: Cross multiply
    123,124.92x = 169,896.02 × 69,412.20
  4. Step 4: Simplify right side
    123,124.92x = 11,792,856,519.44
  5. Step 5: Solve for x
    x = 11,792,856,519.44/123,124.92
  6. Step 6: Final answer
    x = 95,779.61

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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.