Home / 141,321.28-212,003.44-87,970.09

Finding the Fourth Proportional to 141,321.28, 212,003.44 and 87,970.09

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Solution

The fourth proportional to 141,321.28, 212,003.44 and 87,970.09 is: 131,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,321.28 : 212,003.44 = 87,970.09 : x
  2. Step 2: Convert to fraction form
    141,321.28/212,003.44 = 87,970.09/x
  3. Step 3: Cross multiply
    141,321.28x = 212,003.44 × 87,970.09
  4. Step 4: Simplify right side
    141,321.28x = 18,649,961,697.11
  5. Step 5: Solve for x
    x = 18,649,961,697.11/141,321.28
  6. Step 6: Final answer
    x = 131,968.53

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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.