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Finding the Fourth Proportional to 99,789.93, 149,751 and 54,842.68

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Solution

The fourth proportional to 99,789.93, 149,751 and 54,842.68 is: 82,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,789.93 : 149,751 = 54,842.68 : x
  2. Step 2: Convert to fraction form
    99,789.93/149,751 = 54,842.68/x
  3. Step 3: Cross multiply
    99,789.93x = 149,751 × 54,842.68
  4. Step 4: Simplify right side
    99,789.93x = 8,212,745,423.93
  5. Step 5: Solve for x
    x = 8,212,745,423.93/99,789.93
  6. Step 6: Final answer
    x = 82,300.34

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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.