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Finding the Fourth Proportional to 139,480.46, 209,118.16 and 44,655.78

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Solution

The fourth proportional to 139,480.46, 209,118.16 and 44,655.78 is: 66,950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,480.46 : 209,118.16 = 44,655.78 : x
  2. Step 2: Convert to fraction form
    139,480.46/209,118.16 = 44,655.78/x
  3. Step 3: Cross multiply
    139,480.46x = 209,118.16 × 44,655.78
  4. Step 4: Simplify right side
    139,480.46x = 9,338,334,546.96
  5. Step 5: Solve for x
    x = 9,338,334,546.96/139,480.46
  6. Step 6: Final answer
    x = 66,950.84

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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.