Home / 115,905.40-173,814.90-80,740.60

Finding the Fourth Proportional to 115,905.40, 173,814.90 and 80,740.60

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Solution

The fourth proportional to 115,905.40, 173,814.90 and 80,740.60 is: 121,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,905.40 : 173,814.90 = 80,740.60 : x
  2. Step 2: Convert to fraction form
    115,905.40/173,814.90 = 80,740.60/x
  3. Step 3: Cross multiply
    115,905.40x = 173,814.90 × 80,740.60
  4. Step 4: Simplify right side
    115,905.40x = 14,033,919,314.94
  5. Step 5: Solve for x
    x = 14,033,919,314.94/115,905.40
  6. Step 6: Final answer
    x = 121,080.81

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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.