Home / 132,390.20-182,739.36-81,418.52

Finding the Fourth Proportional to 132,390.20, 182,739.36 and 81,418.52

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Solution

The fourth proportional to 132,390.20, 182,739.36 and 81,418.52 is: 112,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,390.20 : 182,739.36 = 81,418.52 : x
  2. Step 2: Convert to fraction form
    132,390.20/182,739.36 = 81,418.52/x
  3. Step 3: Cross multiply
    132,390.20x = 182,739.36 × 81,418.52
  4. Step 4: Simplify right side
    132,390.20x = 14,878,368,236.95
  5. Step 5: Solve for x
    x = 14,878,368,236.95/132,390.20
  6. Step 6: Final answer
    x = 112,382.70

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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.