Home / 156,009,375.72-215,299,706.06-86,394,756.61

Finding the Fourth Proportional to 156,009,375.72, 215,299,706.06 and 86,394,756.61

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Solution

The fourth proportional to 156,009,375.72, 215,299,706.06 and 86,394,756.61 is: 119,228,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,009,375.72 : 215,299,706.06 = 86,394,756.61 : x
  2. Step 2: Convert to fraction form
    156,009,375.72/215,299,706.06 = 86,394,756.61/x
  3. Step 3: Cross multiply
    156,009,375.72x = 215,299,706.06 × 86,394,756.61
  4. Step 4: Simplify right side
    156,009,375.72x = 18,600,765,702,181,744
  5. Step 5: Solve for x
    x = 18,600,765,702,181,744/156,009,375.72
  6. Step 6: Final answer
    x = 119,228,511.85

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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.