Home / 139,844.88-192,984.20-76,181.32

Finding the Fourth Proportional to 139,844.88, 192,984.20 and 76,181.32

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Solution

The fourth proportional to 139,844.88, 192,984.20 and 76,181.32 is: 105,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.88 : 192,984.20 = 76,181.32 : x
  2. Step 2: Convert to fraction form
    139,844.88/192,984.20 = 76,181.32/x
  3. Step 3: Cross multiply
    139,844.88x = 192,984.20 × 76,181.32
  4. Step 4: Simplify right side
    139,844.88x = 14,701,791,095.14
  5. Step 5: Solve for x
    x = 14,701,791,095.14/139,844.88
  6. Step 6: Final answer
    x = 105,129.28

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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.