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Finding the Fourth Proportional to 103,675.20, 155,221.20 and 93,177.60

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Solution

The fourth proportional to 103,675.20, 155,221.20 and 93,177.60 is: 139,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,675.20 : 155,221.20 = 93,177.60 : x
  2. Step 2: Convert to fraction form
    103,675.20/155,221.20 = 93,177.60/x
  3. Step 3: Cross multiply
    103,675.20x = 155,221.20 × 93,177.60
  4. Step 4: Simplify right side
    103,675.20x = 14,463,138,885.12
  5. Step 5: Solve for x
    x = 14,463,138,885.12/103,675.20
  6. Step 6: Final answer
    x = 139,504.33

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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.