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Finding the Fourth Proportional to 103,801.60, 155,702.40 and 102,817.45

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Solution

The fourth proportional to 103,801.60, 155,702.40 and 102,817.45 is: 154,226.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,801.60 : 155,702.40 = 102,817.45 : x
  2. Step 2: Convert to fraction form
    103,801.60/155,702.40 = 102,817.45/x
  3. Step 3: Cross multiply
    103,801.60x = 155,702.40 × 102,817.45
  4. Step 4: Simplify right side
    103,801.60x = 16,008,923,726.88
  5. Step 5: Solve for x
    x = 16,008,923,726.88/103,801.60
  6. Step 6: Final answer
    x = 154,226.18

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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.