Home / 101,940.12-140,672.56-56,621.02

Finding the Fourth Proportional to 101,940.12, 140,672.56 and 56,621.02

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Solution

The fourth proportional to 101,940.12, 140,672.56 and 56,621.02 is: 78,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,940.12 : 140,672.56 = 56,621.02 : x
  2. Step 2: Convert to fraction form
    101,940.12/140,672.56 = 56,621.02/x
  3. Step 3: Cross multiply
    101,940.12x = 140,672.56 × 56,621.02
  4. Step 4: Simplify right side
    101,940.12x = 7,965,023,833.21
  5. Step 5: Solve for x
    x = 7,965,023,833.21/101,940.12
  6. Step 6: Final answer
    x = 78,134.34

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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.