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Finding the Fourth Proportional to 95,163.40, 142,745.10 and 86,415.40

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Solution

The fourth proportional to 95,163.40, 142,745.10 and 86,415.40 is: 129,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,163.40 : 142,745.10 = 86,415.40 : x
  2. Step 2: Convert to fraction form
    95,163.40/142,745.10 = 86,415.40/x
  3. Step 3: Cross multiply
    95,163.40x = 142,745.10 × 86,415.40
  4. Step 4: Simplify right side
    95,163.40x = 12,335,374,914.54
  5. Step 5: Solve for x
    x = 12,335,374,914.54/95,163.40
  6. Step 6: Final answer
    x = 129,623.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.