Home / 112,440,965.70-168,288,200.55-81,648,005.70

Finding the Fourth Proportional to 112,440,965.70, 168,288,200.55 and 81,648,005.70

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Solution

The fourth proportional to 112,440,965.70, 168,288,200.55 and 81,648,005.70 is: 122,200,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,440,965.70 : 168,288,200.55 = 81,648,005.70 : x
  2. Step 2: Convert to fraction form
    112,440,965.70/168,288,200.55 = 81,648,005.70/x
  3. Step 3: Cross multiply
    112,440,965.70x = 168,288,200.55 × 81,648,005.70
  4. Step 4: Simplify right side
    112,440,965.70x = 13,740,395,957,749,144
  5. Step 5: Solve for x
    x = 13,740,395,957,749,144/112,440,965.70
  6. Step 6: Final answer
    x = 122,200,977.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.