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Finding the Fourth Proportional to 123,064.80, 184,451.40 and 91,863.60

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Solution

The fourth proportional to 123,064.80, 184,451.40 and 91,863.60 is: 137,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,064.80 : 184,451.40 = 91,863.60 : x
  2. Step 2: Convert to fraction form
    123,064.80/184,451.40 = 91,863.60/x
  3. Step 3: Cross multiply
    123,064.80x = 184,451.40 × 91,863.60
  4. Step 4: Simplify right side
    123,064.80x = 16,944,369,629.04
  5. Step 5: Solve for x
    x = 16,944,369,629.04/123,064.80
  6. Step 6: Final answer
    x = 137,686.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.