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Finding the Fourth Proportional to 154,485.30, 231,555.15 and 87,957.30

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Solution

The fourth proportional to 154,485.30, 231,555.15 and 87,957.30 is: 131,837.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485.30 : 231,555.15 = 87,957.30 : x
  2. Step 2: Convert to fraction form
    154,485.30/231,555.15 = 87,957.30/x
  3. Step 3: Cross multiply
    154,485.30x = 231,555.15 × 87,957.30
  4. Step 4: Simplify right side
    154,485.30x = 20,366,965,795.10
  5. Step 5: Solve for x
    x = 20,366,965,795.10/154,485.30
  6. Step 6: Final answer
    x = 131,837.57

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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.