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Finding the Fourth Proportional to 125,529, 173,245.38 and 72,537

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Solution

The fourth proportional to 125,529, 173,245.38 and 72,537 is: 100,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,529 : 173,245.38 = 72,537 : x
  2. Step 2: Convert to fraction form
    125,529/173,245.38 = 72,537/x
  3. Step 3: Cross multiply
    125,529x = 173,245.38 × 72,537
  4. Step 4: Simplify right side
    125,529x = 12,566,700,129.06
  5. Step 5: Solve for x
    x = 12,566,700,129.06/125,529
  6. Step 6: Final answer
    x = 100,109.94

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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.