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Finding the Fourth Proportional to 125,000.40, 172,496.30 and 68,410.56

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Solution

The fourth proportional to 125,000.40, 172,496.30 and 68,410.56 is: 94,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,000.40 : 172,496.30 = 68,410.56 : x
  2. Step 2: Convert to fraction form
    125,000.40/172,496.30 = 68,410.56/x
  3. Step 3: Cross multiply
    125,000.40x = 172,496.30 × 68,410.56
  4. Step 4: Simplify right side
    125,000.40x = 11,800,568,480.93
  5. Step 5: Solve for x
    x = 11,800,568,480.93/125,000.40
  6. Step 6: Final answer
    x = 94,404.25

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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.