Home / 115,757.20-173,693.40-45,638.80

Finding the Fourth Proportional to 115,757.20, 173,693.40 and 45,638.80

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Solution

The fourth proportional to 115,757.20, 173,693.40 and 45,638.80 is: 68,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,757.20 : 173,693.40 = 45,638.80 : x
  2. Step 2: Convert to fraction form
    115,757.20/173,693.40 = 45,638.80/x
  3. Step 3: Cross multiply
    115,757.20x = 173,693.40 × 45,638.80
  4. Step 4: Simplify right side
    115,757.20x = 7,927,158,343.92
  5. Step 5: Solve for x
    x = 7,927,158,343.92/115,757.20
  6. Step 6: Final answer
    x = 68,480.91

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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.