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Finding the Fourth Proportional to 101,229.94, 139,860.03 and 86,280.58

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Solution

The fourth proportional to 101,229.94, 139,860.03 and 86,280.58 is: 119,205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,229.94 : 139,860.03 = 86,280.58 : x
  2. Step 2: Convert to fraction form
    101,229.94/139,860.03 = 86,280.58/x
  3. Step 3: Cross multiply
    101,229.94x = 139,860.03 × 86,280.58
  4. Step 4: Simplify right side
    101,229.94x = 12,067,204,507.22
  5. Step 5: Solve for x
    x = 12,067,204,507.22/101,229.94
  6. Step 6: Final answer
    x = 119,205.88

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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.