Home / 125,268.22-172,869.78-68,679.64

Finding the Fourth Proportional to 125,268.22, 172,869.78 and 68,679.64

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Solution

The fourth proportional to 125,268.22, 172,869.78 and 68,679.64 is: 94,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,268.22 : 172,869.78 = 68,679.64 : x
  2. Step 2: Convert to fraction form
    125,268.22/172,869.78 = 68,679.64/x
  3. Step 3: Cross multiply
    125,268.22x = 172,869.78 × 68,679.64
  4. Step 4: Simplify right side
    125,268.22x = 11,872,634,257.28
  5. Step 5: Solve for x
    x = 11,872,634,257.28/125,268.22
  6. Step 6: Final answer
    x = 94,777.70

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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.