Home / 156,126,409.50-215,459,169.03-86,505,276.54

Finding the Fourth Proportional to 156,126,409.50, 215,459,169.03 and 86,505,276.54

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Solution

The fourth proportional to 156,126,409.50, 215,459,169.03 and 86,505,276.54 is: 119,379,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,126,409.50 : 215,459,169.03 = 86,505,276.54 : x
  2. Step 2: Convert to fraction form
    156,126,409.50/215,459,169.03 = 86,505,276.54/x
  3. Step 3: Cross multiply
    156,126,409.50x = 215,459,169.03 × 86,505,276.54
  4. Step 4: Simplify right side
    156,126,409.50x = 18,638,355,000,018,756
  5. Step 5: Solve for x
    x = 18,638,355,000,018,756/156,126,409.50
  6. Step 6: Final answer
    x = 119,379,899.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.