Home / 268,578.54-402,876.81-81,589.50

Finding the Fourth Proportional to 268,578.54, 402,876.81 and 81,589.50

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Solution

The fourth proportional to 268,578.54, 402,876.81 and 81,589.50 is: 122,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,578.54 : 402,876.81 = 81,589.50 : x
  2. Step 2: Convert to fraction form
    268,578.54/402,876.81 = 81,589.50/x
  3. Step 3: Cross multiply
    268,578.54x = 402,876.81 × 81,589.50
  4. Step 4: Simplify right side
    268,578.54x = 32,870,517,489.50
  5. Step 5: Solve for x
    x = 32,870,517,489.50/268,578.54
  6. Step 6: Final answer
    x = 122,386.98

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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.