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Finding the Fourth Proportional to 103,053.20, 154,493.40 and 53,805.20

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Solution

The fourth proportional to 103,053.20, 154,493.40 and 53,805.20 is: 80,662.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,053.20 : 154,493.40 = 53,805.20 : x
  2. Step 2: Convert to fraction form
    103,053.20/154,493.40 = 53,805.20/x
  3. Step 3: Cross multiply
    103,053.20x = 154,493.40 × 53,805.20
  4. Step 4: Simplify right side
    103,053.20x = 8,312,548,285.68
  5. Step 5: Solve for x
    x = 8,312,548,285.68/103,053.20
  6. Step 6: Final answer
    x = 80,662.69

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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.