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Finding the Fourth Proportional to 162,912.40, 244,295.70 and 74,120.20

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Solution

The fourth proportional to 162,912.40, 244,295.70 and 74,120.20 is: 111,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,912.40 : 244,295.70 = 74,120.20 : x
  2. Step 2: Convert to fraction form
    162,912.40/244,295.70 = 74,120.20/x
  3. Step 3: Cross multiply
    162,912.40x = 244,295.70 × 74,120.20
  4. Step 4: Simplify right side
    162,912.40x = 18,107,246,143.14
  5. Step 5: Solve for x
    x = 18,107,246,143.14/162,912.40
  6. Step 6: Final answer
    x = 111,147.13

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1.5x scale

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.