Home / 115,919.40-173,835.90-80,754.60

Finding the Fourth Proportional to 115,919.40, 173,835.90 and 80,754.60

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Solution

The fourth proportional to 115,919.40, 173,835.90 and 80,754.60 is: 121,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919.40 : 173,835.90 = 80,754.60 : x
  2. Step 2: Convert to fraction form
    115,919.40/173,835.90 = 80,754.60/x
  3. Step 3: Cross multiply
    115,919.40x = 173,835.90 × 80,754.60
  4. Step 4: Simplify right side
    115,919.40x = 14,038,048,570.14
  5. Step 5: Solve for x
    x = 14,038,048,570.14/115,919.40
  6. Step 6: Final answer
    x = 121,101.80

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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.