Home / 105,985.14-158,982.57-74,958.90

Finding the Fourth Proportional to 105,985.14, 158,982.57 and 74,958.90

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Solution

The fourth proportional to 105,985.14, 158,982.57 and 74,958.90 is: 112,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,985.14 : 158,982.57 = 74,958.90 : x
  2. Step 2: Convert to fraction form
    105,985.14/158,982.57 = 74,958.90/x
  3. Step 3: Cross multiply
    105,985.14x = 158,982.57 × 74,958.90
  4. Step 4: Simplify right side
    105,985.14x = 11,917,158,566.37
  5. Step 5: Solve for x
    x = 11,917,158,566.37/105,985.14
  6. Step 6: Final answer
    x = 112,441.79

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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.