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Finding the Fourth Proportional to 162,751.92, 243,700.68 and 130,993.20

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Solution

The fourth proportional to 162,751.92, 243,700.68 and 130,993.20 is: 196,145.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,751.92 : 243,700.68 = 130,993.20 : x
  2. Step 2: Convert to fraction form
    162,751.92/243,700.68 = 130,993.20/x
  3. Step 3: Cross multiply
    162,751.92x = 243,700.68 × 130,993.20
  4. Step 4: Simplify right side
    162,751.92x = 31,923,131,915.38
  5. Step 5: Solve for x
    x = 31,923,131,915.38/162,751.92
  6. Step 6: Final answer
    x = 196,145.96

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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.