Home / 109,839.34-164,759.88-71,920.56

Finding the Fourth Proportional to 109,839.34, 164,759.88 and 71,920.56

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Solution

The fourth proportional to 109,839.34, 164,759.88 and 71,920.56 is: 107,881.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,839.34 : 164,759.88 = 71,920.56 : x
  2. Step 2: Convert to fraction form
    109,839.34/164,759.88 = 71,920.56/x
  3. Step 3: Cross multiply
    109,839.34x = 164,759.88 × 71,920.56
  4. Step 4: Simplify right side
    109,839.34x = 11,849,622,835.13
  5. Step 5: Solve for x
    x = 11,849,622,835.13/109,839.34
  6. Step 6: Final answer
    x = 107,881.41

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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.