Home / 218,131.16-301,020.64-122,638.04

Finding the Fourth Proportional to 218,131.16, 301,020.64 and 122,638.04

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Solution

The fourth proportional to 218,131.16, 301,020.64 and 122,638.04 is: 169,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,131.16 : 301,020.64 = 122,638.04 : x
  2. Step 2: Convert to fraction form
    218,131.16/301,020.64 = 122,638.04/x
  3. Step 3: Cross multiply
    218,131.16x = 301,020.64 × 122,638.04
  4. Step 4: Simplify right side
    218,131.16x = 36,916,581,289.15
  5. Step 5: Solve for x
    x = 36,916,581,289.15/218,131.16
  6. Step 6: Final answer
    x = 169,240.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.