Home / 172,112,764.18-258,245,385.10-90,212,178.44

Finding the Fourth Proportional to 172,112,764.18, 258,245,385.10 and 90,212,178.44

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Solution

The fourth proportional to 172,112,764.18, 258,245,385.10 and 90,212,178.44 is: 135,358,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,112,764.18 : 258,245,385.10 = 90,212,178.44 : x
  2. Step 2: Convert to fraction form
    172,112,764.18/258,245,385.10 = 90,212,178.44/x
  3. Step 3: Cross multiply
    172,112,764.18x = 258,245,385.10 × 90,212,178.44
  4. Step 4: Simplify right side
    172,112,764.18x = 23,296,878,761,947,716
  5. Step 5: Solve for x
    x = 23,296,878,761,947,716/172,112,764.18
  6. Step 6: Final answer
    x = 135,358,227.92

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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.