Home / 105,990.78-146,268.27-58,245.18

Finding the Fourth Proportional to 105,990.78, 146,268.27 and 58,245.18

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Solution

The fourth proportional to 105,990.78, 146,268.27 and 58,245.18 is: 80,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,990.78 : 146,268.27 = 58,245.18 : x
  2. Step 2: Convert to fraction form
    105,990.78/146,268.27 = 58,245.18/x
  3. Step 3: Cross multiply
    105,990.78x = 146,268.27 × 58,245.18
  4. Step 4: Simplify right side
    105,990.78x = 8,519,421,714.44
  5. Step 5: Solve for x
    x = 8,519,421,714.44/105,990.78
  6. Step 6: Final answer
    x = 80,378.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.