Home / 268,111.36-402,166.86-68,431.78

Finding the Fourth Proportional to 268,111.36, 402,166.86 and 68,431.78

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Solution

The fourth proportional to 268,111.36, 402,166.86 and 68,431.78 is: 102,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,111.36 : 402,166.86 = 68,431.78 : x
  2. Step 2: Convert to fraction form
    268,111.36/402,166.86 = 68,431.78/x
  3. Step 3: Cross multiply
    268,111.36x = 402,166.86 × 68,431.78
  4. Step 4: Simplify right side
    268,111.36x = 27,520,994,086.81
  5. Step 5: Solve for x
    x = 27,520,994,086.81/268,111.36
  6. Step 6: Final answer
    x = 102,647.62

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1.5x scale

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.