Home / 215,213.12-322,688.48-81,951.04

Finding the Fourth Proportional to 215,213.12, 322,688.48 and 81,951.04

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Solution

The fourth proportional to 215,213.12, 322,688.48 and 81,951.04 is: 122,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,213.12 : 322,688.48 = 81,951.04 : x
  2. Step 2: Convert to fraction form
    215,213.12/322,688.48 = 81,951.04/x
  3. Step 3: Cross multiply
    215,213.12x = 322,688.48 × 81,951.04
  4. Step 4: Simplify right side
    215,213.12x = 26,444,656,532.02
  5. Step 5: Solve for x
    x = 26,444,656,532.02/215,213.12
  6. Step 6: Final answer
    x = 122,876.60

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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.