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Finding the Fourth Proportional to 103,127.84, 154,835.43 and 53,243.89

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Solution

The fourth proportional to 103,127.84, 154,835.43 and 53,243.89 is: 79,940.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,127.84 : 154,835.43 = 53,243.89 : x
  2. Step 2: Convert to fraction form
    103,127.84/154,835.43 = 53,243.89/x
  3. Step 3: Cross multiply
    103,127.84x = 154,835.43 × 53,243.89
  4. Step 4: Simplify right side
    103,127.84x = 8,244,040,603.02
  5. Step 5: Solve for x
    x = 8,244,040,603.02/103,127.84
  6. Step 6: Final answer
    x = 79,940.01

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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.