Home / 205,192.12-307,896.52-145,605.65

Finding the Fourth Proportional to 205,192.12, 307,896.52 and 145,605.65

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Solution

The fourth proportional to 205,192.12, 307,896.52 and 145,605.65 is: 218,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,192.12 : 307,896.52 = 145,605.65 : x
  2. Step 2: Convert to fraction form
    205,192.12/307,896.52 = 145,605.65/x
  3. Step 3: Cross multiply
    205,192.12x = 307,896.52 × 145,605.65
  4. Step 4: Simplify right side
    205,192.12x = 44,831,473,333.07
  5. Step 5: Solve for x
    x = 44,831,473,333.07/205,192.12
  6. Step 6: Final answer
    x = 218,485.36

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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.