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Finding the Fourth Proportional to 103,685.15, 155,527.73 and 51,197.15

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Solution

The fourth proportional to 103,685.15, 155,527.73 and 51,197.15 is: 76,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,685.15 : 155,527.73 = 51,197.15 : x
  2. Step 2: Convert to fraction form
    103,685.15/155,527.73 = 51,197.15/x
  3. Step 3: Cross multiply
    103,685.15x = 155,527.73 × 51,197.15
  4. Step 4: Simplify right side
    103,685.15x = 7,962,576,521.97
  5. Step 5: Solve for x
    x = 7,962,576,521.97/103,685.15
  6. Step 6: Final answer
    x = 76,795.73

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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.