Home / 268,115.13-402,172.34-68,435.51

Finding the Fourth Proportional to 268,115.13, 402,172.34 and 68,435.51

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Solution

The fourth proportional to 268,115.13, 402,172.34 and 68,435.51 is: 102,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,115.13 : 402,172.34 = 68,435.51 : x
  2. Step 2: Convert to fraction form
    268,115.13/402,172.34 = 68,435.51/x
  3. Step 3: Cross multiply
    268,115.13x = 402,172.34 × 68,435.51
  4. Step 4: Simplify right side
    268,115.13x = 27,522,866,842.75
  5. Step 5: Solve for x
    x = 27,522,866,842.75/268,115.13
  6. Step 6: Final answer
    x = 102,653.17

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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.