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Finding the Fourth Proportional to 97,659, 134,765.69 and 55,218.42

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Solution

The fourth proportional to 97,659, 134,765.69 and 55,218.42 is: 76,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,659 : 134,765.69 = 55,218.42 : x
  2. Step 2: Convert to fraction form
    97,659/134,765.69 = 55,218.42/x
  3. Step 3: Cross multiply
    97,659x = 134,765.69 × 55,218.42
  4. Step 4: Simplify right side
    97,659x = 7,441,548,195.92
  5. Step 5: Solve for x
    x = 7,441,548,195.92/97,659
  6. Step 6: Final answer
    x = 76,199.31

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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.