Home / 236,021.10-353,982.45-86,331.90

Finding the Fourth Proportional to 236,021.10, 353,982.45 and 86,331.90

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Solution

The fourth proportional to 236,021.10, 353,982.45 and 86,331.90 is: 129,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,021.10 : 353,982.45 = 86,331.90 : x
  2. Step 2: Convert to fraction form
    236,021.10/353,982.45 = 86,331.90/x
  3. Step 3: Cross multiply
    236,021.10x = 353,982.45 × 86,331.90
  4. Step 4: Simplify right side
    236,021.10x = 30,559,977,475.16
  5. Step 5: Solve for x
    x = 30,559,977,475.16/236,021.10
  6. Step 6: Final answer
    x = 129,479.85

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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.