Home / 268,687.20-403,053.36-81,700.32

Finding the Fourth Proportional to 268,687.20, 403,053.36 and 81,700.32

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Solution

The fourth proportional to 268,687.20, 403,053.36 and 81,700.32 is: 122,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,687.20 : 403,053.36 = 81,700.32 : x
  2. Step 2: Convert to fraction form
    268,687.20/403,053.36 = 81,700.32/x
  3. Step 3: Cross multiply
    268,687.20x = 403,053.36 × 81,700.32
  4. Step 4: Simplify right side
    268,687.20x = 32,929,588,489.08
  5. Step 5: Solve for x
    x = 32,929,588,489.08/268,687.20
  6. Step 6: Final answer
    x = 122,557.34

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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.