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Finding the Fourth Proportional to 122,921.40, 184,187.70 and 103,092.60

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Solution

The fourth proportional to 122,921.40, 184,187.70 and 103,092.60 is: 154,475.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,921.40 : 184,187.70 = 103,092.60 : x
  2. Step 2: Convert to fraction form
    122,921.40/184,187.70 = 103,092.60/x
  3. Step 3: Cross multiply
    122,921.40x = 184,187.70 × 103,092.60
  4. Step 4: Simplify right side
    122,921.40x = 18,988,388,881.02
  5. Step 5: Solve for x
    x = 18,988,388,881.02/122,921.40
  6. Step 6: Final answer
    x = 154,475.86

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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.