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Finding the Fourth Proportional to 103,443.41, 155,160.90 and 35,990.89

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Solution

The fourth proportional to 103,443.41, 155,160.90 and 35,990.89 is: 53,984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,443.41 : 155,160.90 = 35,990.89 : x
  2. Step 2: Convert to fraction form
    103,443.41/155,160.90 = 35,990.89/x
  3. Step 3: Cross multiply
    103,443.41x = 155,160.90 × 35,990.89
  4. Step 4: Simplify right side
    103,443.41x = 5,584,378,108.40
  5. Step 5: Solve for x
    x = 5,584,378,108.40/103,443.41
  6. Step 6: Final answer
    x = 53,984.86

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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.