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Finding the Fourth Proportional to 103,487.42, 155,108.10 and 92,907.80

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Solution

The fourth proportional to 103,487.42, 155,108.10 and 92,907.80 is: 139,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,487.42 : 155,108.10 = 92,907.80 : x
  2. Step 2: Convert to fraction form
    103,487.42/155,108.10 = 92,907.80/x
  3. Step 3: Cross multiply
    103,487.42x = 155,108.10 × 92,907.80
  4. Step 4: Simplify right side
    103,487.42x = 14,410,752,333.18
  5. Step 5: Solve for x
    x = 14,410,752,333.18/103,487.42
  6. Step 6: Final answer
    x = 139,251.25

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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.