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Finding the Fourth Proportional to 102,930.80, 154,396.20 and 43,768.40

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Solution

The fourth proportional to 102,930.80, 154,396.20 and 43,768.40 is: 65,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,930.80 : 154,396.20 = 43,768.40 : x
  2. Step 2: Convert to fraction form
    102,930.80/154,396.20 = 43,768.40/x
  3. Step 3: Cross multiply
    102,930.80x = 154,396.20 × 43,768.40
  4. Step 4: Simplify right side
    102,930.80x = 6,757,674,640.08
  5. Step 5: Solve for x
    x = 6,757,674,640.08/102,930.80
  6. Step 6: Final answer
    x = 65,652.60

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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.