Home / 138,081.46-190,550.60-77,652.09

Finding the Fourth Proportional to 138,081.46, 190,550.60 and 77,652.09

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Solution

The fourth proportional to 138,081.46, 190,550.60 and 77,652.09 is: 107,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081.46 : 190,550.60 = 77,652.09 : x
  2. Step 2: Convert to fraction form
    138,081.46/190,550.60 = 77,652.09/x
  3. Step 3: Cross multiply
    138,081.46x = 190,550.60 × 77,652.09
  4. Step 4: Simplify right side
    138,081.46x = 14,796,651,388.00
  5. Step 5: Solve for x
    x = 14,796,651,388.00/138,081.46
  6. Step 6: Final answer
    x = 107,158.86

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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.