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Finding the Fourth Proportional to 98,189.55, 135,493.27 and 55,165.68

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Solution

The fourth proportional to 98,189.55, 135,493.27 and 55,165.68 is: 76,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,189.55 : 135,493.27 = 55,165.68 : x
  2. Step 2: Convert to fraction form
    98,189.55/135,493.27 = 55,165.68/x
  3. Step 3: Cross multiply
    98,189.55x = 135,493.27 × 55,165.68
  4. Step 4: Simplify right side
    98,189.55x = 7,474,578,374.97
  5. Step 5: Solve for x
    x = 7,474,578,374.97/98,189.55
  6. Step 6: Final answer
    x = 76,123.97

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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.