Home / 191,678,742.78-287,415,821.76-99,469,639.56

Finding the Fourth Proportional to 191,678,742.78, 287,415,821.76 and 99,469,639.56

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Solution

The fourth proportional to 191,678,742.78, 287,415,821.76 and 99,469,639.56 is: 149,151,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,678,742.78 : 287,415,821.76 = 99,469,639.56 : x
  2. Step 2: Convert to fraction form
    191,678,742.78/287,415,821.76 = 99,469,639.56/x
  3. Step 3: Cross multiply
    191,678,742.78x = 287,415,821.76 × 99,469,639.56
  4. Step 4: Simplify right side
    191,678,742.78x = 28,589,148,194,308,404
  5. Step 5: Solve for x
    x = 28,589,148,194,308,404/191,678,742.78
  6. Step 6: Final answer
    x = 149,151,375.78

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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.