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Finding the Fourth Proportional to 144,815.40, 217,251.90 and 121,602.60

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Solution

The fourth proportional to 144,815.40, 217,251.90 and 121,602.60 is: 182,428.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,815.40 : 217,251.90 = 121,602.60 : x
  2. Step 2: Convert to fraction form
    144,815.40/217,251.90 = 121,602.60/x
  3. Step 3: Cross multiply
    144,815.40x = 217,251.90 × 121,602.60
  4. Step 4: Simplify right side
    144,815.40x = 26,418,395,894.94
  5. Step 5: Solve for x
    x = 26,418,395,894.94/144,815.40
  6. Step 6: Final answer
    x = 182,428.08

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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.