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Finding the Fourth Proportional to 120,976.88, 166,948.09 and 67,984.88

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Solution

The fourth proportional to 120,976.88, 166,948.09 and 67,984.88 is: 93,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,976.88 : 166,948.09 = 67,984.88 : x
  2. Step 2: Convert to fraction form
    120,976.88/166,948.09 = 67,984.88/x
  3. Step 3: Cross multiply
    120,976.88x = 166,948.09 × 67,984.88
  4. Step 4: Simplify right side
    120,976.88x = 11,349,944,860.18
  5. Step 5: Solve for x
    x = 11,349,944,860.18/120,976.88
  6. Step 6: Final answer
    x = 93,819.13

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1.5x scale

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.