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Finding the Fourth Proportional to 135,660.96, 203,510.88 and 42,174

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Solution

The fourth proportional to 135,660.96, 203,510.88 and 42,174 is: 63,267.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,660.96 : 203,510.88 = 42,174 : x
  2. Step 2: Convert to fraction form
    135,660.96/203,510.88 = 42,174/x
  3. Step 3: Cross multiply
    135,660.96x = 203,510.88 × 42,174
  4. Step 4: Simplify right side
    135,660.96x = 8,582,867,853.12
  5. Step 5: Solve for x
    x = 8,582,867,853.12/135,660.96
  6. Step 6: Final answer
    x = 63,267.04

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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.