Home / 156,108,161.91-215,422,006.05-85,543,353.03

Finding the Fourth Proportional to 156,108,161.91, 215,422,006.05 and 85,543,353.03

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Solution

The fourth proportional to 156,108,161.91, 215,422,006.05 and 85,543,353.03 is: 118,045,850.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,108,161.91 : 215,422,006.05 = 85,543,353.03 : x
  2. Step 2: Convert to fraction form
    156,108,161.91/215,422,006.05 = 85,543,353.03/x
  3. Step 3: Cross multiply
    156,108,161.91x = 215,422,006.05 × 85,543,353.03
  4. Step 4: Simplify right side
    156,108,161.91x = 18,427,920,713,965,948
  5. Step 5: Solve for x
    x = 18,427,920,713,965,948/156,108,161.91
  6. Step 6: Final answer
    x = 118,045,850.32

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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.