Home / 135,456.06-203,117.10-79,310.31

Finding the Fourth Proportional to 135,456.06, 203,117.10 and 79,310.31

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Solution

The fourth proportional to 135,456.06, 203,117.10 and 79,310.31 is: 118,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,456.06 : 203,117.10 = 79,310.31 : x
  2. Step 2: Convert to fraction form
    135,456.06/203,117.10 = 79,310.31/x
  3. Step 3: Cross multiply
    135,456.06x = 203,117.10 × 79,310.31
  4. Step 4: Simplify right side
    135,456.06x = 16,109,280,167.30
  5. Step 5: Solve for x
    x = 16,109,280,167.30/135,456.06
  6. Step 6: Final answer
    x = 118,926.24

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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.