Home / 139,581,229.05-209,379,716.78-42,540,102.45

Finding the Fourth Proportional to 139,581,229.05, 209,379,716.78 and 42,540,102.45

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Solution

The fourth proportional to 139,581,229.05, 209,379,716.78 and 42,540,102.45 is: 63,812,553.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,581,229.05 : 209,379,716.78 = 42,540,102.45 : x
  2. Step 2: Convert to fraction form
    139,581,229.05/209,379,716.78 = 42,540,102.45/x
  3. Step 3: Cross multiply
    139,581,229.05x = 209,379,716.78 × 42,540,102.45
  4. Step 4: Simplify right side
    139,581,229.05x = 8,907,034,602,560,484
  5. Step 5: Solve for x
    x = 8,907,034,602,560,484/139,581,229.05
  6. Step 6: Final answer
    x = 63,812,553.19

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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.