Home / 109,452.90-163,920.15-74,201.70

Finding the Fourth Proportional to 109,452.90, 163,920.15 and 74,201.70

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Solution

The fourth proportional to 109,452.90, 163,920.15 and 74,201.70 is: 111,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,452.90 : 163,920.15 = 74,201.70 : x
  2. Step 2: Convert to fraction form
    109,452.90/163,920.15 = 74,201.70/x
  3. Step 3: Cross multiply
    109,452.90x = 163,920.15 × 74,201.70
  4. Step 4: Simplify right side
    109,452.90x = 12,163,153,794.26
  5. Step 5: Solve for x
    x = 12,163,153,794.26/109,452.90
  6. Step 6: Final answer
    x = 111,126.83

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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.