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Finding the Fourth Proportional to 178,739.76, 268,109.40 and 45,620.02

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Solution

The fourth proportional to 178,739.76, 268,109.40 and 45,620.02 is: 68,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,739.76 : 268,109.40 = 45,620.02 : x
  2. Step 2: Convert to fraction form
    178,739.76/268,109.40 = 45,620.02/x
  3. Step 3: Cross multiply
    178,739.76x = 268,109.40 × 45,620.02
  4. Step 4: Simplify right side
    178,739.76x = 12,231,156,190.19
  5. Step 5: Solve for x
    x = 12,231,156,190.19/178,739.76
  6. Step 6: Final answer
    x = 68,429.97

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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.