Home / 115,913.40-173,826.90-80,748.60

Finding the Fourth Proportional to 115,913.40, 173,826.90 and 80,748.60

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Solution

The fourth proportional to 115,913.40, 173,826.90 and 80,748.60 is: 121,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,913.40 : 173,826.90 = 80,748.60 : x
  2. Step 2: Convert to fraction form
    115,913.40/173,826.90 = 80,748.60/x
  3. Step 3: Cross multiply
    115,913.40x = 173,826.90 × 80,748.60
  4. Step 4: Simplify right side
    115,913.40x = 14,036,278,817.34
  5. Step 5: Solve for x
    x = 14,036,278,817.34/115,913.40
  6. Step 6: Final answer
    x = 121,092.81

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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.