Home / 132,639.12-182,811.30-115,536.78

Finding the Fourth Proportional to 132,639.12, 182,811.30 and 115,536.78

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Solution

The fourth proportional to 132,639.12, 182,811.30 and 115,536.78 is: 159,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,639.12 : 182,811.30 = 115,536.78 : x
  2. Step 2: Convert to fraction form
    132,639.12/182,811.30 = 115,536.78/x
  3. Step 3: Cross multiply
    132,639.12x = 182,811.30 × 115,536.78
  4. Step 4: Simplify right side
    132,639.12x = 21,121,428,949.61
  5. Step 5: Solve for x
    x = 21,121,428,949.61/132,639.12
  6. Step 6: Final answer
    x = 159,239.82

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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.