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Finding the Fourth Proportional to 103,609.60, 155,414.40 and 101,881.60

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Solution

The fourth proportional to 103,609.60, 155,414.40 and 101,881.60 is: 152,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,609.60 : 155,414.40 = 101,881.60 : x
  2. Step 2: Convert to fraction form
    103,609.60/155,414.40 = 101,881.60/x
  3. Step 3: Cross multiply
    103,609.60x = 155,414.40 × 101,881.60
  4. Step 4: Simplify right side
    103,609.60x = 15,833,867,735.04
  5. Step 5: Solve for x
    x = 15,833,867,735.04/103,609.60
  6. Step 6: Final answer
    x = 152,822.40

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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.