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Finding the Fourth Proportional to 187,409.50, 281,143.48 and 61,019.90

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Solution

The fourth proportional to 187,409.50, 281,143.48 and 61,019.90 is: 91,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,409.50 : 281,143.48 = 61,019.90 : x
  2. Step 2: Convert to fraction form
    187,409.50/281,143.48 = 61,019.90/x
  3. Step 3: Cross multiply
    187,409.50x = 281,143.48 × 61,019.90
  4. Step 4: Simplify right side
    187,409.50x = 17,155,347,035.25
  5. Step 5: Solve for x
    x = 17,155,347,035.25/187,409.50
  6. Step 6: Final answer
    x = 91,539.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.