Home / 115,137.32-172,779.48-55,940.72

Finding the Fourth Proportional to 115,137.32, 172,779.48 and 55,940.72

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Solution

The fourth proportional to 115,137.32, 172,779.48 and 55,940.72 is: 83,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,137.32 : 172,779.48 = 55,940.72 : x
  2. Step 2: Convert to fraction form
    115,137.32/172,779.48 = 55,940.72/x
  3. Step 3: Cross multiply
    115,137.32x = 172,779.48 × 55,940.72
  4. Step 4: Simplify right side
    115,137.32x = 9,665,408,512.43
  5. Step 5: Solve for x
    x = 9,665,408,512.43/115,137.32
  6. Step 6: Final answer
    x = 83,946.79

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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.