Home / 268,756.11-403,192.49-81,762.75

Finding the Fourth Proportional to 268,756.11, 403,192.49 and 81,762.75

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Solution

The fourth proportional to 268,756.11, 403,192.49 and 81,762.75 is: 122,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,756.11 : 403,192.49 = 81,762.75 : x
  2. Step 2: Convert to fraction form
    268,756.11/403,192.49 = 81,762.75/x
  3. Step 3: Cross multiply
    268,756.11x = 403,192.49 × 81,762.75
  4. Step 4: Simplify right side
    268,756.11x = 32,966,126,352.93
  5. Step 5: Solve for x
    x = 32,966,126,352.93/268,756.11
  6. Step 6: Final answer
    x = 122,661.87

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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.