Home / 208,030,895.10-312,096,109.05-100,236,872.70

Finding the Fourth Proportional to 208,030,895.10, 312,096,109.05 and 100,236,872.70

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Solution

The fourth proportional to 208,030,895.10, 312,096,109.05 and 100,236,872.70 is: 150,379,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,030,895.10 : 312,096,109.05 = 100,236,872.70 : x
  2. Step 2: Convert to fraction form
    208,030,895.10/312,096,109.05 = 100,236,872.70/x
  3. Step 3: Cross multiply
    208,030,895.10x = 312,096,109.05 × 100,236,872.70
  4. Step 4: Simplify right side
    208,030,895.10x = 31,283,537,953,010,172
  5. Step 5: Solve for x
    x = 31,283,537,953,010,172/208,030,895.10
  6. Step 6: Final answer
    x = 150,379,288.32

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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.