Home / 99,835.20-137,760.48-55,120.32

Finding the Fourth Proportional to 99,835.20, 137,760.48 and 55,120.32

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Solution

The fourth proportional to 99,835.20, 137,760.48 and 55,120.32 is: 76,059.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,835.20 : 137,760.48 = 55,120.32 : x
  2. Step 2: Convert to fraction form
    99,835.20/137,760.48 = 55,120.32/x
  3. Step 3: Cross multiply
    99,835.20x = 137,760.48 × 55,120.32
  4. Step 4: Simplify right side
    99,835.20x = 7,593,401,740.95
  5. Step 5: Solve for x
    x = 7,593,401,740.95/99,835.20
  6. Step 6: Final answer
    x = 76,059.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.