Home / 99,021.34-148,359.21-82,487.62

Finding the Fourth Proportional to 99,021.34, 148,359.21 and 82,487.62

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Solution

The fourth proportional to 99,021.34, 148,359.21 and 82,487.62 is: 123,587.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,021.34 : 148,359.21 = 82,487.62 : x
  2. Step 2: Convert to fraction form
    99,021.34/148,359.21 = 82,487.62/x
  3. Step 3: Cross multiply
    99,021.34x = 148,359.21 × 82,487.62
  4. Step 4: Simplify right side
    99,021.34x = 12,237,798,137.98
  5. Step 5: Solve for x
    x = 12,237,798,137.98/99,021.34
  6. Step 6: Final answer
    x = 123,587.48

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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.