Home / 213,787.36-320,697.76-71,633.12

Finding the Fourth Proportional to 213,787.36, 320,697.76 and 71,633.12

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Solution

The fourth proportional to 213,787.36, 320,697.76 and 71,633.12 is: 107,455.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,787.36 : 320,697.76 = 71,633.12 : x
  2. Step 2: Convert to fraction form
    213,787.36/320,697.76 = 71,633.12/x
  3. Step 3: Cross multiply
    213,787.36x = 320,697.76 × 71,633.12
  4. Step 4: Simplify right side
    213,787.36x = 22,972,581,125.81
  5. Step 5: Solve for x
    x = 22,972,581,125.81/213,787.36
  6. Step 6: Final answer
    x = 107,455.28

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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.