Home / 205,107.02-307,621.58-86,861.37

Finding the Fourth Proportional to 205,107.02, 307,621.58 and 86,861.37

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Solution

The fourth proportional to 205,107.02, 307,621.58 and 86,861.37 is: 130,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,107.02 : 307,621.58 = 86,861.37 : x
  2. Step 2: Convert to fraction form
    205,107.02/307,621.58 = 86,861.37/x
  3. Step 3: Cross multiply
    205,107.02x = 307,621.58 × 86,861.37
  4. Step 4: Simplify right side
    205,107.02x = 26,720,431,446.06
  5. Step 5: Solve for x
    x = 26,720,431,446.06/205,107.02
  6. Step 6: Final answer
    x = 130,275.56

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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.