Home / 206,817.38-310,156.30-78,703.25

Finding the Fourth Proportional to 206,817.38, 310,156.30 and 78,703.25

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Solution

The fourth proportional to 206,817.38, 310,156.30 and 78,703.25 is: 118,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,817.38 : 310,156.30 = 78,703.25 : x
  2. Step 2: Convert to fraction form
    206,817.38/310,156.30 = 78,703.25/x
  3. Step 3: Cross multiply
    206,817.38x = 310,156.30 × 78,703.25
  4. Step 4: Simplify right side
    206,817.38x = 24,410,308,424.46
  5. Step 5: Solve for x
    x = 24,410,308,424.46/206,817.38
  6. Step 6: Final answer
    x = 118,028.33

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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.