Home / 77,147.20-115,893.60-73,998.40

Finding the Fourth Proportional to 77,147.20, 115,893.60 and 73,998.40

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Solution

The fourth proportional to 77,147.20, 115,893.60 and 73,998.40 is: 111,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.20 : 115,893.60 = 73,998.40 : x
  2. Step 2: Convert to fraction form
    77,147.20/115,893.60 = 73,998.40/x
  3. Step 3: Cross multiply
    77,147.20x = 115,893.60 × 73,998.40
  4. Step 4: Simplify right side
    77,147.20x = 8,575,940,970.24
  5. Step 5: Solve for x
    x = 8,575,940,970.24/77,147.20
  6. Step 6: Final answer
    x = 111,163.35

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1.5x scale

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.