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Finding the Fourth Proportional to 102,900.74, 154,351.10 and 67,832.19

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Solution

The fourth proportional to 102,900.74, 154,351.10 and 67,832.19 is: 101,748.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,900.74 : 154,351.10 = 67,832.19 : x
  2. Step 2: Convert to fraction form
    102,900.74/154,351.10 = 67,832.19/x
  3. Step 3: Cross multiply
    102,900.74x = 154,351.10 × 67,832.19
  4. Step 4: Simplify right side
    102,900.74x = 10,469,973,311.49
  5. Step 5: Solve for x
    x = 10,469,973,311.49/102,900.74
  6. Step 6: Final answer
    x = 101,748.29

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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.