Home / 142,655,738,847.90-196,865,046,250.82-78,427,555,917.91

Finding the Fourth Proportional to 142,655,738,847.90, 196,865,046,250.82 and 78,427,555,917.91

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Solution

The fourth proportional to 142,655,738,847.90, 196,865,046,250.82 and 78,427,555,917.91 is: 108,230,096,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655,738,847.90 : 196,865,046,250.82 = 78,427,555,917.91 : x
  2. Step 2: Convert to fraction form
    142,655,738,847.90/196,865,046,250.82 = 78,427,555,917.91/x
  3. Step 3: Cross multiply
    142,655,738,847.90x = 196,865,046,250.82 × 78,427,555,917.91
  4. Step 4: Simplify right side
    142,655,738,847.90x = 15,439,644,423,118,125,006,848
  5. Step 5: Solve for x
    x = 15,439,644,423,118,125,006,848/142,655,738,847.90
  6. Step 6: Final answer
    x = 108,230,096,789.73

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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.