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Finding the Fourth Proportional to 123,209.60, 184,814.40 and 117,960.80

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Solution

The fourth proportional to 123,209.60, 184,814.40 and 117,960.80 is: 176,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,209.60 : 184,814.40 = 117,960.80 : x
  2. Step 2: Convert to fraction form
    123,209.60/184,814.40 = 117,960.80/x
  3. Step 3: Cross multiply
    123,209.60x = 184,814.40 × 117,960.80
  4. Step 4: Simplify right side
    123,209.60x = 21,800,854,475.52
  5. Step 5: Solve for x
    x = 21,800,854,475.52/123,209.60
  6. Step 6: Final answer
    x = 176,941.20

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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.