Home / 121,020.20-166,983.90-73,278

Finding the Fourth Proportional to 121,020.20, 166,983.90 and 73,278

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Solution

The fourth proportional to 121,020.20, 166,983.90 and 73,278 is: 101,109.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,020.20 : 166,983.90 = 73,278 : x
  2. Step 2: Convert to fraction form
    121,020.20/166,983.90 = 73,278/x
  3. Step 3: Cross multiply
    121,020.20x = 166,983.90 × 73,278
  4. Step 4: Simplify right side
    121,020.20x = 12,236,246,224.20
  5. Step 5: Solve for x
    x = 12,236,246,224.20/121,020.20
  6. Step 6: Final answer
    x = 101,109.12

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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.