Home / 143,056,359,879.12-197,408,881,499.45-78,823,489,650.84

Finding the Fourth Proportional to 143,056,359,879.12, 197,408,881,499.45 and 78,823,489,650.84

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Solution

The fourth proportional to 143,056,359,879.12, 197,408,881,499.45 and 78,823,489,650.84 is: 108,771,514,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056,359,879.12 : 197,408,881,499.45 = 78,823,489,650.84 : x
  2. Step 2: Convert to fraction form
    143,056,359,879.12/197,408,881,499.45 = 78,823,489,650.84/x
  3. Step 3: Cross multiply
    143,056,359,879.12x = 197,408,881,499.45 × 78,823,489,650.84
  4. Step 4: Simplify right side
    143,056,359,879.12x = 15,560,456,927,855,796,813,824
  5. Step 5: Solve for x
    x = 15,560,456,927,855,796,813,824/143,056,359,879.12
  6. Step 6: Final answer
    x = 108,771,514,534.58

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1.5x scale

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.