Home / 138,014.14-190,458.44-76,760.88

Finding the Fourth Proportional to 138,014.14, 190,458.44 and 76,760.88

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Solution

The fourth proportional to 138,014.14, 190,458.44 and 76,760.88 is: 105,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,014.14 : 190,458.44 = 76,760.88 : x
  2. Step 2: Convert to fraction form
    138,014.14/190,458.44 = 76,760.88/x
  3. Step 3: Cross multiply
    138,014.14x = 190,458.44 × 76,760.88
  4. Step 4: Simplify right side
    138,014.14x = 14,619,757,457.83
  5. Step 5: Solve for x
    x = 14,619,757,457.83/138,014.14
  6. Step 6: Final answer
    x = 105,929.42

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1.5x scale

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.