Home / 120,072.22-165,722.56-79,164.52

Finding the Fourth Proportional to 120,072.22, 165,722.56 and 79,164.52

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Solution

The fourth proportional to 120,072.22, 165,722.56 and 79,164.52 is: 109,262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,072.22 : 165,722.56 = 79,164.52 : x
  2. Step 2: Convert to fraction form
    120,072.22/165,722.56 = 79,164.52/x
  3. Step 3: Cross multiply
    120,072.22x = 165,722.56 × 79,164.52
  4. Step 4: Simplify right side
    120,072.22x = 13,119,346,915.57
  5. Step 5: Solve for x
    x = 13,119,346,915.57/120,072.22
  6. Step 6: Final answer
    x = 109,262.13

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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.