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Finding the Fourth Proportional to 125,664, 173,416.68 and 71,949.84

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Solution

The fourth proportional to 125,664, 173,416.68 and 71,949.84 is: 99,290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,664 : 173,416.68 = 71,949.84 : x
  2. Step 2: Convert to fraction form
    125,664/173,416.68 = 71,949.84/x
  3. Step 3: Cross multiply
    125,664x = 173,416.68 × 71,949.84
  4. Step 4: Simplify right side
    125,664x = 12,477,302,379.33
  5. Step 5: Solve for x
    x = 12,477,302,379.33/125,664
  6. Step 6: Final answer
    x = 99,290.99

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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.