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Finding the Fourth Proportional to 123,639.92, 170,622.24 and 67,051.26

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Solution

The fourth proportional to 123,639.92, 170,622.24 and 67,051.26 is: 92,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,639.92 : 170,622.24 = 67,051.26 : x
  2. Step 2: Convert to fraction form
    123,639.92/170,622.24 = 67,051.26/x
  3. Step 3: Cross multiply
    123,639.92x = 170,622.24 × 67,051.26
  4. Step 4: Simplify right side
    123,639.92x = 11,440,436,176.02
  5. Step 5: Solve for x
    x = 11,440,436,176.02/123,639.92
  6. Step 6: Final answer
    x = 92,530.28

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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.