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Finding the Fourth Proportional to 125,945, 173,788.90 and 72,227.24

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Solution

The fourth proportional to 125,945, 173,788.90 and 72,227.24 is: 99,664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,945 : 173,788.90 = 72,227.24 : x
  2. Step 2: Convert to fraction form
    125,945/173,788.90 = 72,227.24/x
  3. Step 3: Cross multiply
    125,945x = 173,788.90 × 72,227.24
  4. Step 4: Simplify right side
    125,945x = 12,552,292,589.64
  5. Step 5: Solve for x
    x = 12,552,292,589.64/125,945
  6. Step 6: Final answer
    x = 99,664.87

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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.