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Finding the Fourth Proportional to 97,620.60, 134,724.78 and 55,186.68

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Solution

The fourth proportional to 97,620.60, 134,724.78 and 55,186.68 is: 76,162.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,620.60 : 134,724.78 = 55,186.68 : x
  2. Step 2: Convert to fraction form
    97,620.60/134,724.78 = 55,186.68/x
  3. Step 3: Cross multiply
    97,620.60x = 134,724.78 × 55,186.68
  4. Step 4: Simplify right side
    97,620.60x = 7,435,013,321.93
  5. Step 5: Solve for x
    x = 7,435,013,321.93/97,620.60
  6. Step 6: Final answer
    x = 76,162.34

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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.