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Finding the Fourth Proportional to 88,163.25, 131,315.87 and 86,317.97

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Solution

The fourth proportional to 88,163.25, 131,315.87 and 86,317.97 is: 128,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,163.25 : 131,315.87 = 86,317.97 : x
  2. Step 2: Convert to fraction form
    88,163.25/131,315.87 = 86,317.97/x
  3. Step 3: Cross multiply
    88,163.25x = 131,315.87 × 86,317.97
  4. Step 4: Simplify right side
    88,163.25x = 11,334,918,670.60
  5. Step 5: Solve for x
    x = 11,334,918,670.60/88,163.25
  6. Step 6: Final answer
    x = 128,567.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.