Home / 139,969,154.70-209,953,732.05-82,431,809.10

Finding the Fourth Proportional to 139,969,154.70, 209,953,732.05 and 82,431,809.10

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Solution

The fourth proportional to 139,969,154.70, 209,953,732.05 and 82,431,809.10 is: 123,647,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,154.70 : 209,953,732.05 = 82,431,809.10 : x
  2. Step 2: Convert to fraction form
    139,969,154.70/209,953,732.05 = 82,431,809.10/x
  3. Step 3: Cross multiply
    139,969,154.70x = 209,953,732.05 × 82,431,809.10
  4. Step 4: Simplify right side
    139,969,154.70x = 17,306,865,960,178,152
  5. Step 5: Solve for x
    x = 17,306,865,960,178,152/139,969,154.70
  6. Step 6: Final answer
    x = 123,647,713.65

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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.