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Finding the Fourth Proportional to 125,835.80, 173,642.80 and 74,144.68

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Solution

The fourth proportional to 125,835.80, 173,642.80 and 74,144.68 is: 102,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,835.80 : 173,642.80 = 74,144.68 : x
  2. Step 2: Convert to fraction form
    125,835.80/173,642.80 = 74,144.68/x
  3. Step 3: Cross multiply
    125,835.80x = 173,642.80 × 74,144.68
  4. Step 4: Simplify right side
    125,835.80x = 12,874,689,840.30
  5. Step 5: Solve for x
    x = 12,874,689,840.30/125,835.80
  6. Step 6: Final answer
    x = 102,313.41

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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.