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Finding the Fourth Proportional to 155,188.90, 214,144.72 and 87,195.07

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Solution

The fourth proportional to 155,188.90, 214,144.72 and 87,195.07 is: 120,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,188.90 : 214,144.72 = 87,195.07 : x
  2. Step 2: Convert to fraction form
    155,188.90/214,144.72 = 87,195.07/x
  3. Step 3: Cross multiply
    155,188.90x = 214,144.72 × 87,195.07
  4. Step 4: Simplify right side
    155,188.90x = 18,672,363,850.53
  5. Step 5: Solve for x
    x = 18,672,363,850.53/155,188.90
  6. Step 6: Final answer
    x = 120,320.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.