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Finding the Fourth Proportional to 98,149.92, 135,450.96 and 55,712.40

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Solution

The fourth proportional to 98,149.92, 135,450.96 and 55,712.40 is: 76,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,149.92 : 135,450.96 = 55,712.40 : x
  2. Step 2: Convert to fraction form
    98,149.92/135,450.96 = 55,712.40/x
  3. Step 3: Cross multiply
    98,149.92x = 135,450.96 × 55,712.40
  4. Step 4: Simplify right side
    98,149.92x = 7,546,298,063.90
  5. Step 5: Solve for x
    x = 7,546,298,063.90/98,149.92
  6. Step 6: Final answer
    x = 76,885.42

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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.