Home / 100,405.02-150,311.58-87,949.38

Finding the Fourth Proportional to 100,405.02, 150,311.58 and 87,949.38

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Solution

The fourth proportional to 100,405.02, 150,311.58 and 87,949.38 is: 131,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,405.02 : 150,311.58 = 87,949.38 : x
  2. Step 2: Convert to fraction form
    100,405.02/150,311.58 = 87,949.38/x
  3. Step 3: Cross multiply
    100,405.02x = 150,311.58 × 87,949.38
  4. Step 4: Simplify right side
    100,405.02x = 13,219,810,267.82
  5. Step 5: Solve for x
    x = 13,219,810,267.82/100,405.02
  6. Step 6: Final answer
    x = 131,664.83

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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.