Home / 115,944.90-173,874.15-80,780.10

Finding the Fourth Proportional to 115,944.90, 173,874.15 and 80,780.10

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Solution

The fourth proportional to 115,944.90, 173,874.15 and 80,780.10 is: 121,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,944.90 : 173,874.15 = 80,780.10 : x
  2. Step 2: Convert to fraction form
    115,944.90/173,874.15 = 80,780.10/x
  3. Step 3: Cross multiply
    115,944.90x = 173,874.15 × 80,780.10
  4. Step 4: Simplify right side
    115,944.90x = 14,045,571,224.42
  5. Step 5: Solve for x
    x = 14,045,571,224.42/115,944.90
  6. Step 6: Final answer
    x = 121,140.05

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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.