Home / 139,148.64-191,961.36-82,539.36

Finding the Fourth Proportional to 139,148.64, 191,961.36 and 82,539.36

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Solution

The fourth proportional to 139,148.64, 191,961.36 and 82,539.36 is: 113,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,148.64 : 191,961.36 = 82,539.36 : x
  2. Step 2: Convert to fraction form
    139,148.64/191,961.36 = 82,539.36/x
  3. Step 3: Cross multiply
    139,148.64x = 191,961.36 × 82,539.36
  4. Step 4: Simplify right side
    139,148.64x = 15,844,367,799.13
  5. Step 5: Solve for x
    x = 15,844,367,799.13/139,148.64
  6. Step 6: Final answer
    x = 113,866.49

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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.