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Finding the Fourth Proportional to 144,599.67, 216,936.90 and 84,678.75

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Solution

The fourth proportional to 144,599.67, 216,936.90 and 84,678.75 is: 127,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,599.67 : 216,936.90 = 84,678.75 : x
  2. Step 2: Convert to fraction form
    144,599.67/216,936.90 = 84,678.75/x
  3. Step 3: Cross multiply
    144,599.67x = 216,936.90 × 84,678.75
  4. Step 4: Simplify right side
    144,599.67x = 18,369,945,520.88
  5. Step 5: Solve for x
    x = 18,369,945,520.88/144,599.67
  6. Step 6: Final answer
    x = 127,040.02

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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.