Home / 132,558.30-182,932.64-72,129.25

Finding the Fourth Proportional to 132,558.30, 182,932.64 and 72,129.25

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Solution

The fourth proportional to 132,558.30, 182,932.64 and 72,129.25 is: 99,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,558.30 : 182,932.64 = 72,129.25 : x
  2. Step 2: Convert to fraction form
    132,558.30/182,932.64 = 72,129.25/x
  3. Step 3: Cross multiply
    132,558.30x = 182,932.64 × 72,129.25
  4. Step 4: Simplify right side
    132,558.30x = 13,194,793,591.91
  5. Step 5: Solve for x
    x = 13,194,793,591.91/132,558.30
  6. Step 6: Final answer
    x = 99,539.55

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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.