Home / 99,789.18-149,749.87-54,841.92

Finding the Fourth Proportional to 99,789.18, 149,749.87 and 54,841.92

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Solution

The fourth proportional to 99,789.18, 149,749.87 and 54,841.92 is: 82,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,789.18 : 149,749.87 = 54,841.92 : x
  2. Step 2: Convert to fraction form
    99,789.18/149,749.87 = 54,841.92/x
  3. Step 3: Cross multiply
    99,789.18x = 149,749.87 × 54,841.92
  4. Step 4: Simplify right side
    99,789.18x = 8,212,570,459.10
  5. Step 5: Solve for x
    x = 8,212,570,459.10/99,789.18
  6. Step 6: Final answer
    x = 82,299.21

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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.