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Finding the Fourth Proportional to 103,809.90, 155,902.57 and 95,903.90

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Solution

The fourth proportional to 103,809.90, 155,902.57 and 95,903.90 is: 144,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.90 : 155,902.57 = 95,903.90 : x
  2. Step 2: Convert to fraction form
    103,809.90/155,902.57 = 95,903.90/x
  3. Step 3: Cross multiply
    103,809.90x = 155,902.57 × 95,903.90
  4. Step 4: Simplify right side
    103,809.90x = 14,951,664,483.02
  5. Step 5: Solve for x
    x = 14,951,664,483.02/103,809.90
  6. Step 6: Final answer
    x = 144,029.27

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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.