Home / 121,961.52-168,286.68-71,670.24

Finding the Fourth Proportional to 121,961.52, 168,286.68 and 71,670.24

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Solution

The fourth proportional to 121,961.52, 168,286.68 and 71,670.24 is: 98,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,961.52 : 168,286.68 = 71,670.24 : x
  2. Step 2: Convert to fraction form
    121,961.52/168,286.68 = 71,670.24/x
  3. Step 3: Cross multiply
    121,961.52x = 168,286.68 × 71,670.24
  4. Step 4: Simplify right side
    121,961.52x = 12,061,146,744.40
  5. Step 5: Solve for x
    x = 12,061,146,744.40/121,961.52
  6. Step 6: Final answer
    x = 98,893.05

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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.