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Finding the Fourth Proportional to 139,627.40, 209,441.10 and 73,041.80

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Solution

The fourth proportional to 139,627.40, 209,441.10 and 73,041.80 is: 109,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,627.40 : 209,441.10 = 73,041.80 : x
  2. Step 2: Convert to fraction form
    139,627.40/209,441.10 = 73,041.80/x
  3. Step 3: Cross multiply
    139,627.40x = 209,441.10 × 73,041.80
  4. Step 4: Simplify right side
    139,627.40x = 15,297,954,937.98
  5. Step 5: Solve for x
    x = 15,297,954,937.98/139,627.40
  6. Step 6: Final answer
    x = 109,562.70

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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.