Home / 126,372,515.10-189,558,772.65-71,763,999.90

Finding the Fourth Proportional to 126,372,515.10, 189,558,772.65 and 71,763,999.90

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Solution

The fourth proportional to 126,372,515.10, 189,558,772.65 and 71,763,999.90 is: 107,645,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,372,515.10 : 189,558,772.65 = 71,763,999.90 : x
  2. Step 2: Convert to fraction form
    126,372,515.10/189,558,772.65 = 71,763,999.90/x
  3. Step 3: Cross multiply
    126,372,515.10x = 189,558,772.65 × 71,763,999.90
  4. Step 4: Simplify right side
    126,372,515.10x = 13,603,495,741,498,724
  5. Step 5: Solve for x
    x = 13,603,495,741,498,724/126,372,515.10
  6. Step 6: Final answer
    x = 107,645,999.85

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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.