Home / 139,742.82-192,844.80-76,080.06

Finding the Fourth Proportional to 139,742.82, 192,844.80 and 76,080.06

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Solution

The fourth proportional to 139,742.82, 192,844.80 and 76,080.06 is: 104,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.82 : 192,844.80 = 76,080.06 : x
  2. Step 2: Convert to fraction form
    139,742.82/192,844.80 = 76,080.06/x
  3. Step 3: Cross multiply
    139,742.82x = 192,844.80 × 76,080.06
  4. Step 4: Simplify right side
    139,742.82x = 14,671,643,954.69
  5. Step 5: Solve for x
    x = 14,671,643,954.69/139,742.82
  6. Step 6: Final answer
    x = 104,990.32

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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.