Home / 205,231.10-307,877.43-72,087.89

Finding the Fourth Proportional to 205,231.10, 307,877.43 and 72,087.89

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Solution

The fourth proportional to 205,231.10, 307,877.43 and 72,087.89 is: 108,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,231.10 : 307,877.43 = 72,087.89 : x
  2. Step 2: Convert to fraction form
    205,231.10/307,877.43 = 72,087.89/x
  3. Step 3: Cross multiply
    205,231.10x = 307,877.43 × 72,087.89
  4. Step 4: Simplify right side
    205,231.10x = 22,194,234,307.32
  5. Step 5: Solve for x
    x = 22,194,234,307.32/205,231.10
  6. Step 6: Final answer
    x = 108,142.65

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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.