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Finding the Fourth Proportional to 144,881.40, 217,322.10 and 136,716.60

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Solution

The fourth proportional to 144,881.40, 217,322.10 and 136,716.60 is: 205,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,881.40 : 217,322.10 = 136,716.60 : x
  2. Step 2: Convert to fraction form
    144,881.40/217,322.10 = 136,716.60/x
  3. Step 3: Cross multiply
    144,881.40x = 217,322.10 × 136,716.60
  4. Step 4: Simplify right side
    144,881.40x = 29,711,538,616.86
  5. Step 5: Solve for x
    x = 29,711,538,616.86/144,881.40
  6. Step 6: Final answer
    x = 205,074.90

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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.