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Finding the Fourth Proportional to 178,861.68, 268,300.67 and 126,504.90

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Solution

The fourth proportional to 178,861.68, 268,300.67 and 126,504.90 is: 189,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,861.68 : 268,300.67 = 126,504.90 : x
  2. Step 2: Convert to fraction form
    178,861.68/268,300.67 = 126,504.90/x
  3. Step 3: Cross multiply
    178,861.68x = 268,300.67 × 126,504.90
  4. Step 4: Simplify right side
    178,861.68x = 33,941,349,428.28
  5. Step 5: Solve for x
    x = 33,941,349,428.28/178,861.68
  6. Step 6: Final answer
    x = 189,763.11

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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.