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Finding the Fourth Proportional to 123,718.73, 170,733.83 and 67,130.10

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Solution

The fourth proportional to 123,718.73, 170,733.83 and 67,130.10 is: 92,640.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,718.73 : 170,733.83 = 67,130.10 : x
  2. Step 2: Convert to fraction form
    123,718.73/170,733.83 = 67,130.10/x
  3. Step 3: Cross multiply
    123,718.73x = 170,733.83 × 67,130.10
  4. Step 4: Simplify right side
    123,718.73x = 11,461,378,745.63
  5. Step 5: Solve for x
    x = 11,461,378,745.63/123,718.73
  6. Step 6: Final answer
    x = 92,640.61

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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.