Home / 205,125.20-307,687.80-135,083.60

Finding the Fourth Proportional to 205,125.20, 307,687.80 and 135,083.60

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Solution

The fourth proportional to 205,125.20, 307,687.80 and 135,083.60 is: 202,625.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,125.20 : 307,687.80 = 135,083.60 : x
  2. Step 2: Convert to fraction form
    205,125.20/307,687.80 = 135,083.60/x
  3. Step 3: Cross multiply
    205,125.20x = 307,687.80 × 135,083.60
  4. Step 4: Simplify right side
    205,125.20x = 41,563,575,700.08
  5. Step 5: Solve for x
    x = 41,563,575,700.08/205,125.20
  6. Step 6: Final answer
    x = 202,625.40

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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.