Home / 268,751.24-403,112.38-81,748.20

Finding the Fourth Proportional to 268,751.24, 403,112.38 and 81,748.20

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Solution

The fourth proportional to 268,751.24, 403,112.38 and 81,748.20 is: 122,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,751.24 : 403,112.38 = 81,748.20 : x
  2. Step 2: Convert to fraction form
    268,751.24/403,112.38 = 81,748.20/x
  3. Step 3: Cross multiply
    268,751.24x = 403,112.38 × 81,748.20
  4. Step 4: Simplify right side
    268,751.24x = 32,953,711,462.72
  5. Step 5: Solve for x
    x = 32,953,711,462.72/268,751.24
  6. Step 6: Final answer
    x = 122,617.90

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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.