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Finding the Fourth Proportional to 102,775.56, 154,189.20 and 28,903.56

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Solution

The fourth proportional to 102,775.56, 154,189.20 and 28,903.56 is: 43,362.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,775.56 : 154,189.20 = 28,903.56 : x
  2. Step 2: Convert to fraction form
    102,775.56/154,189.20 = 28,903.56/x
  3. Step 3: Cross multiply
    102,775.56x = 154,189.20 × 28,903.56
  4. Step 4: Simplify right side
    102,775.56x = 4,456,616,793.55
  5. Step 5: Solve for x
    x = 4,456,616,793.55/102,775.56
  6. Step 6: Final answer
    x = 43,362.61

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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.