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Finding the Fourth Proportional to 102,769.20, 154,038.60 and 43,594.80

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Solution

The fourth proportional to 102,769.20, 154,038.60 and 43,594.80 is: 65,343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,769.20 : 154,038.60 = 43,594.80 : x
  2. Step 2: Convert to fraction form
    102,769.20/154,038.60 = 43,594.80/x
  3. Step 3: Cross multiply
    102,769.20x = 154,038.60 × 43,594.80
  4. Step 4: Simplify right side
    102,769.20x = 6,715,281,959.28
  5. Step 5: Solve for x
    x = 6,715,281,959.28/102,769.20
  6. Step 6: Final answer
    x = 65,343.33

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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.