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Finding the Fourth Proportional to 122,114.60, 183,171.90 and 75,458.60

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Solution

The fourth proportional to 122,114.60, 183,171.90 and 75,458.60 is: 113,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,114.60 : 183,171.90 = 75,458.60 : x
  2. Step 2: Convert to fraction form
    122,114.60/183,171.90 = 75,458.60/x
  3. Step 3: Cross multiply
    122,114.60x = 183,171.90 × 75,458.60
  4. Step 4: Simplify right side
    122,114.60x = 13,821,895,133.34
  5. Step 5: Solve for x
    x = 13,821,895,133.34/122,114.60
  6. Step 6: Final answer
    x = 113,187.90

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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.