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Finding the Fourth Proportional to 139,950.60, 209,872.70 and 45,166.58

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Solution

The fourth proportional to 139,950.60, 209,872.70 and 45,166.58 is: 67,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,950.60 : 209,872.70 = 45,166.58 : x
  2. Step 2: Convert to fraction form
    139,950.60/209,872.70 = 45,166.58/x
  3. Step 3: Cross multiply
    139,950.60x = 209,872.70 × 45,166.58
  4. Step 4: Simplify right side
    139,950.60x = 9,479,231,045.00
  5. Step 5: Solve for x
    x = 9,479,231,045.00/139,950.60
  6. Step 6: Final answer
    x = 67,732.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.