Home / 117,374.88-162,013.92-79,189.60

Finding the Fourth Proportional to 117,374.88, 162,013.92 and 79,189.60

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Solution

The fourth proportional to 117,374.88, 162,013.92 and 79,189.60 is: 109,306.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,374.88 : 162,013.92 = 79,189.60 : x
  2. Step 2: Convert to fraction form
    117,374.88/162,013.92 = 79,189.60/x
  3. Step 3: Cross multiply
    117,374.88x = 162,013.92 × 79,189.60
  4. Step 4: Simplify right side
    117,374.88x = 12,829,817,519.23
  5. Step 5: Solve for x
    x = 12,829,817,519.23/117,374.88
  6. Step 6: Final answer
    x = 109,306.33

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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.