Home / 156,009,377.72-215,299,708.82-86,394,758.61

Finding the Fourth Proportional to 156,009,377.72, 215,299,708.82 and 86,394,758.61

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Solution

The fourth proportional to 156,009,377.72, 215,299,708.82 and 86,394,758.61 is: 119,228,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,009,377.72 : 215,299,708.82 = 86,394,758.61 : x
  2. Step 2: Convert to fraction form
    156,009,377.72/215,299,708.82 = 86,394,758.61/x
  3. Step 3: Cross multiply
    156,009,377.72x = 215,299,708.82 × 86,394,758.61
  4. Step 4: Simplify right side
    156,009,377.72x = 18,600,766,372,307,188
  5. Step 5: Solve for x
    x = 18,600,766,372,307,188/156,009,377.72
  6. Step 6: Final answer
    x = 119,228,514.62

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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.