Home / 135,315.91-203,130.96-79,196.30

Finding the Fourth Proportional to 135,315.91, 203,130.96 and 79,196.30

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Solution

The fourth proportional to 135,315.91, 203,130.96 and 79,196.30 is: 118,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,315.91 : 203,130.96 = 79,196.30 : x
  2. Step 2: Convert to fraction form
    135,315.91/203,130.96 = 79,196.30/x
  3. Step 3: Cross multiply
    135,315.91x = 203,130.96 × 79,196.30
  4. Step 4: Simplify right side
    135,315.91x = 16,087,220,447.45
  5. Step 5: Solve for x
    x = 16,087,220,447.45/135,315.91
  6. Step 6: Final answer
    x = 118,886.39

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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.