Home / 113,977.36-171,000.60-80,761.78

Finding the Fourth Proportional to 113,977.36, 171,000.60 and 80,761.78

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Solution

The fourth proportional to 113,977.36, 171,000.60 and 80,761.78 is: 121,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,977.36 : 171,000.60 = 80,761.78 : x
  2. Step 2: Convert to fraction form
    113,977.36/171,000.60 = 80,761.78/x
  3. Step 3: Cross multiply
    113,977.36x = 171,000.60 × 80,761.78
  4. Step 4: Simplify right side
    113,977.36x = 13,810,312,837.07
  5. Step 5: Solve for x
    x = 13,810,312,837.07/113,977.36
  6. Step 6: Final answer
    x = 121,167.16

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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.