Home / 121,654.20-182,357.10-82,215.30

Finding the Fourth Proportional to 121,654.20, 182,357.10 and 82,215.30

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Solution

The fourth proportional to 121,654.20, 182,357.10 and 82,215.30 is: 123,239.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,654.20 : 182,357.10 = 82,215.30 : x
  2. Step 2: Convert to fraction form
    121,654.20/182,357.10 = 82,215.30/x
  3. Step 3: Cross multiply
    121,654.20x = 182,357.10 × 82,215.30
  4. Step 4: Simplify right side
    121,654.20x = 14,992,543,683.63
  5. Step 5: Solve for x
    x = 14,992,543,683.63/121,654.20
  6. Step 6: Final answer
    x = 123,239.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.