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Finding the Fourth Proportional to 121,503.57, 167,682.99 and 67,789.73

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Solution

The fourth proportional to 121,503.57, 167,682.99 and 67,789.73 is: 93,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,503.57 : 167,682.99 = 67,789.73 : x
  2. Step 2: Convert to fraction form
    121,503.57/167,682.99 = 67,789.73/x
  3. Step 3: Cross multiply
    121,503.57x = 167,682.99 × 67,789.73
  4. Step 4: Simplify right side
    121,503.57x = 11,367,184,129.63
  5. Step 5: Solve for x
    x = 11,367,184,129.63/121,503.57
  6. Step 6: Final answer
    x = 93,554.32

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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.