Home / 115,938.90-173,865.15-80,774.10

Finding the Fourth Proportional to 115,938.90, 173,865.15 and 80,774.10

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Solution

The fourth proportional to 115,938.90, 173,865.15 and 80,774.10 is: 121,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,938.90 : 173,865.15 = 80,774.10 : x
  2. Step 2: Convert to fraction form
    115,938.90/173,865.15 = 80,774.10/x
  3. Step 3: Cross multiply
    115,938.90x = 173,865.15 × 80,774.10
  4. Step 4: Simplify right side
    115,938.90x = 14,043,801,012.62
  5. Step 5: Solve for x
    x = 14,043,801,012.62/115,938.90
  6. Step 6: Final answer
    x = 121,131.05

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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.